O'Neill
SKU:4966OA-A00-XS
Psycho One 3/2mm Steamer Chest Zip Wetsuit - Black
8- TB3 Neoprene w/ Technobutter Firewall
- Fluid Seam Weld
- XS.S.M.MS.MT.L.LS.XL.XLS.XXL
- Minimal Seam Design
- CHEST ZIP
- Double Seal Collar
Colour: Black
- SIZE GUIDE
- HOW TO MEASURE
Women Wetsuits
| SIZE | 4 | 6 | 8 | 10 | 12 | 14 | 16 |
| SIZE | XXS | XS | S | M | L | XL | XXL |
| WEIGHT (kg) | 45-52 | 50-57 | 55-61 | 59-68 | 64-73 | 68-77 | 75-84 |
| HEIGHT (cm) | 160-165 | 163-168 | 165-170 | 168-173 | 170-175 | 172-180 | 175-183 |
| BUST (cm) | 77-83 | 80-85 | 83-88 | 86-91 | 90-95 | 94-99 | 98-102 |
| WAIST (cm) | 60-66 | 63-68 | 66-71 | 68-73 | 73-78 | 76-81 | 81-86 |
How to measure
- Weight - Be brave, strip off and jump on the scales to weigh yourself.
- Height - Your full body height, measured from the floor to the top if your head.
- Bust - Keeping the tape level, measure under your arms around the fullest part of the bust.
- Waist - Measure at the narrowest part of the natural waistline with no tension around the tape.
How to measure
- SIZE GUIDE
- HOW TO MEASURE
Women Wetsuit Booties
| Product size | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 |
| US | 6.5 | 7.5 | 8.5 | 9.5 | 10.5 | 11.5 | 12.5 | |||
| EU | 36 | 37/38 | 39 | 40 | 41/42 | 43 | 44 | 45 | 46 | 47/48 |
| UK | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 |
How to measure
Fit Guide - Wetsuit Booties are same as US shoe sizes. Its good to have a bootie that is snug so your foot doesnt roll around, but not too snug as we'd hate for a jammed toe to ruin your session.
How to measure
- SIZE GUIDE
- HOW TO MEASURE
Women Gloves
| Size | XS | S | M | L | XL |
| Hand Length(mm) | 165-178 | 178-191 | 191-203 | 203-216 | 216-229 |
| Citcumference(mm) | 178-191 | 191-203 | 203-216 | 216-229 | 229-241 |
| Hand Length(inches) | 6.5-7 | 7-7.5 | 7.5-8 | 8-8.5 | 8.5-9 |
| Citcumference(inches) | 7-7.5 | 7.5-8 | 8-8.5 | 8.5-9 | 9-9.5 |
How to measure
- Hand Length - Measurement from the bottom of your palm (where it meets your wrist) to the top if your finger.
- Circumference - Measurement of the circumference of yor hand from the first knuckle line, do not include the thumb.
How to measure
- SIZE GUIDE
- HOW TO MEASURE
Women Tops
| Size | XS | S | M | L | XL | XXL |
| Size | 6 | 8 | 10 | 12 | 14 | 16 |
| Bust (cm) | 80 | 85 | 90 | 95 | 100 | 105 |
| Waist (cm) | 60 | 65 | 70 | 75 | 80 | 85 |
| Hip (cm) | 86 | 91 | 96 | 101 | 106 | 111 |
How to measure
- Bust - Keeping the tape level, measure under your arms around the fullest part of the bust.
- Waist - Measure at the narrowest part of the natural waistline with no tension around the tape.
- Hips - Standing with legs together, measure around the widest part of the low hip.
How to measure
- SIZE GUIDE
- HOW TO MEASURE
Women Bottoms
| Size | XS | S | M | L | XL | XXL |
| Size | 6 | 8 | 10 | 12 | 14 | 16 |
| Pant size | 24 | 26 | 28 | 30 | 32 | 34 |
| Waist (cm) | 60 | 65 | 70 | 75 | 80 | 85 |
| Hip (cm) | 86 | 91 | 96 | 101 | 106 | 111 |
How to measure
- Waist - Standing with legs together, measure around the widest part of the low hip.
- Hips - Measure at the narrowest part of the natural waistline with no tension around the tape
How to measure
- SIZE GUIDE
- HOW TO MEASURE
Women Headwear
| One Size | |
Head circumference (cm) | 56 |
How to measure
To Measure - simply measure around the widest part of your head
How to measure
- SIZE GUIDE
- HOW TO MEASURE
Women Snow Jackets
| Product Size | US Size | UK Size | EU Size | Bust in cm | Waist in cm |
| XS | XS | 6 | 34 | 80-84 | 60-64 |
| S | S | 8 | 36 | 85-89 | 65-69 |
| M | M | 10 | 38 | 90-94 | 70-74 |
| L | L | 12 | 40 | 95-99 | 75-79 |
| XL | XL | 14 | 42 | 100-104 | 80-84 |
How to measure
- Bust - Keeping the tape level, measure under your arms around the fullest part of the bust.
- Waist - Measure at the narrowest part of the natural waistline with no tension around the tape.
How to measure
- SIZE GUIDE
- HOW TO MEASURE
Women Snow Pants
| Product Size | Pant Size | UK Size | EU Size | Waist in cm | Hip in cm |
| XS | 25-26 | XS | XS | 60-64 | 86-90 |
| S | 27-28 | S | S | 65-69 | 91-95 |
| M | 29-30 | M | M | 70-74 | 96-100 |
| L | 31-32 | L | L | 75-79 | 101-105 |
| XL | 33-34 | XL | XL | 80-84 | 106-110 |
How to measure
- Waist - Standing with legs together, measure around the widest part of the low hip.
- Hips - Measure at the narrowest part of the natural waistline with no tension around the tape
How to measure
- SIZE GUIDE
- HOW TO MEASURE
Men Wetsuits
| SIZES | HEIGHT (in) | WEIGHT (lbs) | CHEST (in) | WAIST (in) |
| XS | 5'7"-5'9" | 125-140 | 34.5-36.5 | 28-30 |
| S | 5'8"-5'10" | 135-155 | 36.5-38.5 | 29-31 |
| MS (Shorter) | 5'6.5"-5'8.5" | 140-160 | 38.5-40.5 | 30.5-32.5 |
| M | 5'9"-6'1" | 150-170 | 38.5-40.5 | 30.5-32.5 |
| MT (Taller) | 6'1"-6'4" | 160-180 | 38.5-40.5 | 30.5-32.5 |
| LS (Shorter) | 5'7.5"-5'9.5'" | 160-180 | 40.5-42.5 | 32.5-34.5 |
| L | 5'10"-6'2" | 170-190 | 40.5-42.5 | 32.5-34.5 |
| XLS (Shorter) | 5'8.5"-5'10.5" | 180-200 | 42.5-44.5 | 34.5-36.5 |
| XL | 5'11"-6'1" | 190-210 | 42.5-44.5 | 34.5-36.5 |
| 2XL | 6'0"-6'2" | 210-230 | 44.5-46.5 | 36.5-38.5 |
| 3XL | 6'0"-6'3" | 230-250 | 47-49 | 38.5-43.5 |
| SIZES | HEIGHT (cm) | WEIGHT (kg) | CHEST (cm) | WAIST (cm) |
| XS | 170 - 175 | 57 - 64 | 88 - 93 | 71 - 76 |
| S | 173 - 178 | 61 - 70 | 93 - 98 | 74 - 79 |
| MS (Shorter) | 169 - 174 | 64 - 73 | 98 - 103 | 77 - 83 |
| M | 175 - 186 | 68 - 79 | 98 - 103 | 77 - 83 |
| MT (Taller) | 185 - 191 | 73 - 82 | 98 - 103 | 77 - 83 |
| LS (Shorter) | 171 - 177 | 73 - 82 | 103 - 108 | 83 - 88 |
| L | 178 - 187 | 77 - 86 | 103 - 108 | 83 - 88 |
| XLS (Shorter) | 174 - 179 | 82 - 91 | 108 - 113 | 88 - 93 |
| XL | 180 - 187 | 86 - 95 | 108 - 113 | 88 - 93 |
| 2XL | 183 - 188 | 95 - 104 | 113 - 118 | 93 - 98 |
| 3XL | 183 - 191 | 104 - 113 | 119 - 124 | 98 - 110 |
How to measure
- Height - Your full body height, measured from the floor to the top if your head.
- Chest - With your arms relaxed and by your side, measure around the fullest part of your chest, which is generally across the nipples.
- Waist - Measure around your natural waistline, or the narrowest part if your torso.
- Weight - Be brave, strip off and jump on the scales to weigh yourself.
How to measure
- SIZE GUIDE
- HOW TO MEASURE
Men Rashies
| SIZES | HEIGHT (in) | WEIGHT (lbs) | CHEST (in) | WAIST (in) |
| XS | 5'7"-5'9" | 125-140 | 34.5-36.5 | 28-30 |
| S | 5'8"-5'10" | 135-155 | 36.5-38.5 | 29-31 |
| M | 5'9"-5'11" | 150-170 | 38.5-40.5 | 30.5-32.5 |
| L | 5'10"-6'0" | 170-190 | 40.5-42.5 | 32.5-34.5 |
| XL | 5'11"-6'1" | 190-210 | 42.5-44.5 | 34.5-36.5 |
| 2XL | 6'0"-6'2" | 210-230 | 44.5-46.5 | 36.5-38.5 |
| 3XL | 6'0"-6'3" | 230-250 | 47-49 | 38.5-43.5 |
| SIZES | HEIGHT (cm) | WEIGHT (kg) | CHEST (cm) | WAIST (cm) |
| XS | 170 - 175 | 57 - 64 | 88 - 93 | 71 - 76 |
| S | 173 - 178 | 61 - 70 | 93 - 98 | 74 - 79 |
| M | 175 - 180 | 68 - 77 | 98 - 103 | 77 - 83 |
| L | 178 - 183 | 77 - 86 | 103 - 108 | 83 - 88 |
| XL | 180 - 185 | 86 - 95 | 108 - 113 | 88 - 93 |
| 2XL | 183 - 188 | 95 - 104 | 113 - 118 | 93 - 98 |
| 3XL | 183 - 191 | 104 - 113 | 119 - 124 | 98 - 110 |
How to measure
- Height - Your full body height, measured from the floor to the top if your head.
- Chest - With your arms relaxed and by your side, measure around the fullest part of your chest, which is generally across the nipples.
- Waist - Measure around your natural waistline, or the narrowest part if your torso.
- Weight - Be brave, strip off and jump on the scales to weigh yourself.
How to measure
- SIZE GUIDE
- HOW TO MEASURE
Men Wetsuit Booties
| Product size | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 |
| US (mens) | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 |
| US (womens) | 6.5 | 7.5 | 8.5 | 9.5 | 10.5 | 11.5 | 12.5 | |||
| EU | 36 | 37/38 | 39 | 40 | 41/42 | 43 | 44 | 45 | 46 | 47/48 |
| UK | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 |
How to measure
Fit Guide - Wetsuit Booties are same as US shoe sizes. Its good to have a bootie that is snug so your foot doesnt roll around, but not too snug as we'd hate for a jammed toe to ruin your session.
How to measure
- SIZE GUIDE
- HOW TO MEASURE
Men Wetsuit Gloves
| Size | XS | S | M | L | XL |
| Hand Length(mm) | 165-178 | 178-191 | 191-203 | 203-216 | 216-229 |
| Circumference(mm) | 178-191 | 191-203 | 203-216 | 216-229 | 229-241 |
| Hand Length(inches) | 6.5-7 | 7-7.5 | 7.5-8 | 8-8.5 | 8.5-9 |
| Circumference(inches) | 7-7.5 | 7.5-8 | 8-8.5 | 8.5-9 | 9-9.5 |
How to measure
- Hand Length - Measurement from the bottom of your palm (where it meets your wrist) to the top if your finger.
- Circumference - Measurement of the circumference of yor hand from the first knuckle line, do not include the thumb.
How to measure
- SIZE GUIDE
- HOW TO MEASURE
Men Tops
| Size | XS | S | M | L | XL | XXL | XXXL |
| Chest | 86.5 | 91.5 | 96.5 | 101.5 | 106.5 | 111.5 | 116.5 |
| Waist | 71 | 76 | 81 | 86 | 91 | 96 | 101 |
| Hip | 89 | 94 | 99 | 104 | 109 | 114 | 119 |
How to measure
- Chest - With your arms relaxed by your side, measure around the fullest part of your chest, which is generally across the nipples.
- Waist - Measure around your natural waistline, or the narrowest part of your torso.
- Hip - Measure around the fullest part of your hips or bottom.
How to measure
- SIZE GUIDE
- HOW TO MEASURE
Men Bottoms
| Size | 28 | 30 | 32 | 34 | 36 | 38 |
| Size | XS | S | M | L | XL | XXL |
| Waist (inches) | 28 | 30 | 32 | 34 | 36 | 38 |
| Waist (cm) | 71 | 76 | 81 | 86 | 91 | 96 |
| Hip (cm) | 89 | 94 | 99 | 104 | 109 | 114 |
How to measure
- Waist - Measure around your natural waistline, or the narrowest part of your torso.
- Hip - Measure around the fullest part of your hips or bottom.
How to measure
- SIZE GUIDE
- HOW TO MEASURE
Men Headwear
| One Size | S/M | L/XL | |
| Head circumference (cm) | 59 | 58 | 61 |
How to measure
To Measure - simply measure around the widest part of your head
How to measure
- SIZE GUIDE
- HOW TO MEASURE
Men Footwear
| Product size | 7 | 8 | 8/9 | 9 | 10 | 11 | 12 | 13 | 14 |
| USA | 7 | 8 | 8/9 | 9 | 10 | 11 | 12 | 13 | 14 |
| UK | 6 | 7 | 7/8 | 8 | 9 | 10 | 11 | 12 | 13 |
| EU | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 |
How to measure
Fit guide - our footwear sizes are in US sizing. Please use the size table to convert if you are not familiar with US sizing.
How to measure
- SIZE GUIDE
- HOW TO MEASURE
Men Snow Jackets and Snow Pants
| Product size | UK |
| XS | 6 |
| S | 8 |
| M | 10 |
| L | 12 |
| XL | 14 |
| XXL | 16 |
How to measure
How to measure
- SIZE GUIDE
- HOW TO MEASURE
Kids Wetsuits & Rashies
| Size | 1 | 2 | 3 | 4 | 6 | 8 | 10 | 12 | 14 | 16 |
| Height (cm) | 78.5-98 | 98-108 | 108-117 | 117-124 | 124-132 | 132-140 | 140-147 | 147-155 | 155-163 | 163-170 |
| Weight (kg) | 11-13.5 | 13.5-16 | 16-18.5 | 16-23 | 20-27 | 27-34 | 34-41 | 41-48 | 48-54 | 54-61 |
| Chest (cm) | 48-53 | 51-55.5 | 53-58.5 | 62-67 | 64-69 | 66-71 | 71-76 | 74-79 | 79-84 | 84-89 |
| Waist (cm) | 45-50 | 48-53 | 50-55 | 50-55 | 53-58 | 55-61 | 61-66 | 63-68 | 68-73 | 71-76 |
How to measure
- Height - Your full body height, measured from the floor to the top if your head.
- Weight - Jump on the scales and weigh yourself.
- Chest - With your arms relaxed and by your side, measure around the fullest part of your chest, which is generally across the nipples.
- Waist - Measure around your natural waistline, or the narrowest part if your torso.
How to measure
- SIZE GUIDE
- HOW TO MEASURE
Kids Wetsuit Boots
| SIZE | XS | S | M | L | XL |
| US | 8-9 | 10-11 | 12-13 | 1-2 | 3-4 |
| UK | 7-8 | 9-10 | 11-12 | 13-1 | 2-3 |
| EU | 26-27 | 28-29 | 30-31 | 32-33 | 34-35 |
How to measure
How to measure
- SIZE GUIDE
- HOW TO MEASURE
Kids Boys Snow Jackets and Snow Pants
| Age | Product size | EU size | US/CA size | Chest size in cm | Waist size in cm | Hip size in cm |
| 1.5-2 | 92 | 92 | 2T | 54 | 49 | 54 |
| 2-3 | 98 | 98 | 3T | 55 | 50 | 56 |
| 3-4 | 104 | 104 | 4T | 56 | 51 | 58 |
| 5-6 | 116 | 116 | 5 | 58 | 53 | 62 |
| 7-8 | 128 | 128 | 6X | 62 | 56 | 66 |
| 9-10 | 140 | 140 | 8 | 66 | 59 | 70 |
| 11-12 | 152 | 152 | 10 | 72 | 64 | 76 |
| 13-14 | 164 | 164 | 12 | 78 | 69 | 82 |
| 16 | 176 | 176 | 16 | 84 | 74 | 88 |
How to measure
- Chest - With your arms relaxed by your side, measure around the fullest part of your chest, which is generally across the nipples.
- Waist - Measure around your natural waistline, or the narrowest part of your torso.
- Hip - Measure around the fullest part of your hips or bottom.
How to measure
- SIZE GUIDE
- HOW TO MEASURE
Kids Girls Snow Jackets and Snow Pants
| Age | Product size | EU size | Chest size in cm | Waist size in cm | Hip size in cm |
| 1.5-2 | 92 | 92 | 52 | 51 | 54 |
| 2-3 | 98 | 98 | 54 | 52 | 56 |
| 3-4 | 104 | 104 | 56 | 53 | 58 |
| 5-6 | 116 | 116 | 60 | 55 | 62 |
| 7-8 | 128 | 128 | 64 | 57 | 66 |
| 9-10 | 140 | 140 | 70 | 60 | 73 |
| 11-12 | 152 | 152 | 76 | 63 | 80 |
| 13-14 | 164 | 164 | 82 | 67 | 87 |
| 16 | 176 | 176 | 88 | 71 | 94 |
How to measure
- Chest - With your arms relaxed by your side, measure around the fullest part of your chest, which is generally across the nipples.
- Waist - Measure around your natural waistline, or the narrowest part of your torso.
- Hip - Measure around the fullest part of your hips or bottom.
How to measure
Shipping Information
- Shipping is Free on orders over $50
- Shipping is $5.95 on orders under $50
- Orders placed before 2pm business days are shipped that same day
- Delivery usually takes 1-2 days to most of Australia
- We happily accept returns for change of mind, wrong size etc within 60 days
- Customer is responsible for return shipping costs
- Please see our Delivery and Returns guides for more info
TB3 TECHNOBUTTER
O’Neill’s exclusive, maximum stretch, hydrophobic neoprene with featherlight ENVY foam rubber core. Ultimate warmth and comfort. Built to last.
TB3 EXTERIOR JERSEY
Maximum stretch hydrophobic yarns that keep you flexible and dry by shredding water for the lifetime of the suit. BUILT TO LAST.
ENVY FOAM RUBBER CORE
Featherlight warmth. Microscopic air-cell rubber core formula increases the insulation factor bu decreasing mass. LIGHTER AND WARMER.
TB3X INTERIOR JERSEY
Pre-stretched to retain its form for maximum flexibility. Snaps back to hug the body for ultimate comfort and superior fit. PREMIUM STRETCH.
- Features
- FAQ'S
Chest Zip
Front Upper Zip Entry (chest) uses a free floating zipper panel and anti flush barrier with drain holes to keep you dry and feeling loose.
TB3
O’Neill’s exclusive, maximum stretch, hydrophobic neoprene with featherlight ENVY foam rubber core. Ultimate warmth and comfort. Built to last.
Technobutter Firewall
Most insulative, lightest neoprene foam core ever, with heat retaining thermal interior layer and quick dry properties even more stretchier then before.
Fluid Seam Weld
8mm silicone-based urethane sealed exterior with a triple-glued and blind stitched interior. Watertight, durable, and ultra flexible seam.
How much is shipping for Australian orders?
Orders under $50 incur a $5.95 shipping cost
Orders over $50 receive FREE SHIPPING
How much is shipping for New Zealand orders?
Orders under NZD$100 incur a NZD$10.95 shipping cost
Orders over NZD$100 receive FREE SHIPPING
How long does delivery take?
Orders placed before 2pm on business days will ship that same day. Delivery usually takes 1-2 days within Australia and 2-5 days for NZ.
Whats the return policy?
We are happy to offer refunds for unused products within 60 days of purchase. The customer is responsible for return postage costs. See our return policy for full details.
What size am I?
Please see our size guide to help determine your size. There is a link to the size guide on the product page near the 'Add to cart' button.
- Reviews
- Questions
- 1 3/2
- regard
- flushing
- Psycho 1
- chest
- wind
- something
- price
AustraliaThe Psycho 1 3/2 is super flexible, warm and seals well against flushing. It works well except when there’s any wind, which goes right through the chest/back, a little disappointed in that regard. Especially for the price. Probably will try something else next time.
Hi Stephen, thanks for the feedback. This is one of the key differences between the Psycho One and the Psycho Tech. The Psycho One (this suit) is built with performance, comfort, weight and flexibility in mind, whereas the Psycho Tech is very similar however designed for even more warmth... the Psycho Tech features smooth skin on the chest and back, which blocks more wind, however, makes the suit a little heavier, and not quite as flexible. This Psycho One is the more popular as for most surfers, its the ultimate all round suit, but we agree that on very windy days, the Psycho tech would usually be the pick if you have a choice. There is a trade-off for everything, and we think you will appreciate the performance of this suit in most conditions. Most of our team and guys in the office wear this Psycho One, personally i feel the cold more than most people so i wear the Psycho Tech... its just personal preference and whats most important to you. Thanks.
AustraliaVery nice fit. Warm and flexible as advertised!
AustraliaSuper soft! I had stuck with another brand for years but always liked the look and feel of the wetties so I grabbed one and so far it’s pretty nice, fits good except for the wrist and ankles which I think should be tighter, the neck seal feels good too. I got a large size maybe it’s a different fit to what I’m used to
AustraliaThe wettie is great and super fast delivery, it’s my first O’Neil and I know you guys do a great product, My only thing is it’s slightly big I usually am a MT, but think I may be a medium In a O’Neil. Thanks But warm and comfy wet
Thanks for the feedback Robert! If its still unused, you are welcome to return it for a Medium. Also, to help other shoppers, could you tell us how tall you are so we can learn from your sizing experience?
AustraliaHad one before and loved it. Tried others but came back knowing the quality and knowhow O'neill wetsuits produce. Thanks and keep up the good work. Like to see a continual returning customer discount, even if it was 10%. Cheers Damo
