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4/3+mm Men's O'Neill PSYCHO TECH Back Zip Fullsuit
Let's just get down to all of the details with this 4/3+mm Men's O'Neill PSYCHO TECH Back Zip Fullsuit. It's jam-packed with: 100% super stretch TechnoButter 3 neoprene with 0.5mm (hence the + in the title) extra thickness for added warmth, Z.E.N. back zip closure which keeps the water out and keeps you comfortable, sealed seams with Aqua Alpha Solvent Free neoprene lamination and Fluid Seam Weld for a leakproof suit, TechnoButter 3 Air-Firewall smooth skin, TechnoButter 3 Air-Firewall in the thigh/butt/shins/calf/chest/back for super warmth and a quick-drying experience, stitch-less seam technology for a super stretchy and durable seam, and tough kneepads.
1yr Warranty
Technical Specs
| Water Temp Rating * | 52 Degrees & Up |
| Style | Fullsuit |
| Thickness | 4/3+mm |
| Neoprene Type | 100% Stretch |
| Seam Construction | Sealed & Liquid Taped |
| Zipper Style | Full Back Zipper |
| Internal Features | TechnoButter3 Air-Firewall |
* Water temperature ratings are only a guide and are very subjective. If you are cold, get out of the water and seek warmth.
O'Neill Standard Size Chart:
| Size | Height (cm) | Weight (kg) | Chest (cm) | Waist (cm) |
|---|---|---|---|---|
| XS | 170 - 175 | 57 - 63 | 91 - 97 | 71 - 76 |
| S | 173 - 178 | 61 - 70 | 97 - 99 | 76 - 79 |
| ST | 183 - 188 | 66 - 75 | 97 - 99 | 76 - 79 |
| MS | 168 - 173 | 66 - 75 | 99 - 104 | 79 - 84 |
| M | 175 - 180 | 70 - 77 | 99 - 104 | 79 - 84 |
| MT | 185 - 191 | 73 - 82 | 99 - 104 | 79 - 84 |
| LS | 173 - 178 | 73 - 82 | 104 - 112 | 84 - 89 |
| L | 178 - 183 | 77 - 86 | 104 - 112 | 84 - 89 |
| LT | 188 - 193 | 82 - 91 | 104 - 112 | 84 - 89 |
| XLS | 173 - 178 | 82 - 91 | 112 - 117 | 89 - 94 |
| XL | 180 - 185 | 86 - 95 | 112 - 117 | 89 - 94 |
| XLT | 191 - 196 | 91 - 100 | 112 - 117 | 89 - 94 |
| 2XLS | 178 - 183 | 91 - 100 | 117 - 122 | 94 - 99 |
| 2XL | 183 - 188 | 95 - 104 | 117 - 122 | 94 - 99 |
| 3XL | 183 - 191 | 104 - 113 | 122 - 130 | 99 - 112 |
| 4XL | 185 - 193 | 113 - 122 | 130 - 137 | 112 - 122 |
| Size | Height | Weight (lb) | Chest | Waist |
|---|---|---|---|---|
| XS | 5'7 - 5'9" | 125 - 140 | 36.5 - 37.5" | 28.5 - 29.5" |
| S | 5'8 - 5'10" | 135 - 155 | 37.5 - 39" | 29.5 - 31" |
| ST | 6'0 - 6'2" | 145 - 165 | 37.5 - 39" | 29.5 - 31" |
| MS | 5'6.5 - 5'8.5" | 145 - 165 | 39 - 41" | 31 - 33" |
| M | 5'9 - 5'11" | 155 - 170 | 39 - 41" | 31 - 33" |
| MT | 6'1 - 6'3" | 160 - 180 | 39 - 41" | 31 - 33" |
| LS | 5'7.5 - 5'9.5" | 160 - 180 | 41 - 43.5" | 33 - 35" |
| L | 5'10 - 6'0" | 170 - 190 | 41 - 43.5" | 33 - 35" |
| LT | 6'2 - 6'4" | 180 - 200 | 41 - 43.5" | 33 - 35" |
| XLS | 5'8.5 - 5'10.5" | 180 - 200 | 43.5 - 46" | 35 - 37" |
| XL | 5'11 - 6'1" | 190 - 210 | 43.5 - 46" | 35 - 37" |
| XLT | 6'3 - 6'5" | 200 -220 | 43.5 - 46" | 35 - 37" |
| 2XLS | 5'9.5 - 5'11.5" | 200 - 220 | 46 - 48.5" | 37 - 39" |
| 2XL | 6'0 - 6'2" | 210 - 230 | 46 - 48.5" | 37 - 39" |
| 3XL | 6'0 - 6'3" | 230 - 250 | 48.5 - 51" | 39 - 44" |
| 4XL | 6'1 - 6'4" | 250 - 270 | 51 - 53.5" | 44 - 48" |
Allergy notice: It's rare, but neoprene (wetsuits) and/or the materials used in its construction can cause allergic skin reactions. If allergic, discontinue use and consult a physician.
