O'Neill Psycho Tech 3mm ST Booties-Black
Body measurements in inches.
| Alpha | Numeric | Chest | Waist | Hips |
|---|---|---|---|---|
| SM | 28 | 36–37" | 30" | 36" |
| SM | 29 | 36–37" | 31" | 37" |
| SM | 30 | 36–37" | 32" | 38" |
| MD | 31 | 38–39" | 33" | 39" |
| MD | 32 | 38–39" | 34" | 40" |
| LG | 34 | 41–43" | 36" | 42" |
| LG | 36 | 41–43" | 38" | 44" |
| XL | 38 | 45–47" | 40" | 46" |
| XL | 40 | 45–47" | 42" | 48" |
| XXL | 42 | 49–51" | 44" | 50" |
| XXL | 44 | 49–51" | 46" | 52" |
| XXXL | — | 53–55" | 48–50" | 54–56" |
Body measurements in inches.
| Size | Waist | Hip |
|---|---|---|
| 28 | 28" | 36" |
| 29 | 29" | 37" |
| 30 | 30" | 38" |
| 31 | 31" | 39" |
| 32 | 32" | 40" |
| 33 | 33" | 41" |
| 34 | 34" | 42" |
| 36 | 36" | 44" |
| 38 | 38" | 46" |
| 40 | 40" | 48" |
| 42 | 42" | 50" |
| 44 | 44" | 52" |
Body measurements in inches.
| Size | Height | Weight (lbs) | 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" |
| 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" | 33–35" |
| L | 5'11"–6'1" | 170–190 | 41–43" | 33–35" |
| LT | 6'2"–6'4" | 180–200 | 41–43" | 33–35" |
| XLS | 5'8.5"–5'10.5" | 180–200 | 43–45" | 35–37" |
| XL | 6'0"–6'2" | 190–210 | 43–45" | 35–37" |
| XLT | 6'3"–6'5" | 200–220 | 43–45" | 35–37" |
| XXLS | 5'9.5"–5'11.5" | 200–220 | 45–47" | 37–39" |
| XXL | 6'1"–6'3" | 210–230 | 45–47" | 37–39" |
| XXXL | 6'2"–6'4" | 230–250 | 47–49" | 39–44" |
| Size | Height (cm) | Weight (kg) | Chest (cm) | Waist (cm) |
|---|---|---|---|---|
| XS | 170–175 | 57–64 | 93–95 | 72–75 |
| S | 173–178 | 61–70 | 95–99 | 75–79 |
| MS | 169–174 | 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 | 172–177 | 73–82 | 104–109 | 84–89 |
| L | 180–185 | 77–86 | 104–109 | 84–89 |
| LT | 188–193 | 82–91 | 104–109 | 84–89 |
| XLS | 175–179 | 82–91 | 109–114 | 89–94 |
| XL | 183–188 | 86–95 | 109–114 | 89–94 |
| XLT | 191–196 | 91–100 | 109–114 | 89–94 |
| XXLS | 177–182 | 91–100 | 114–119 | 94–99 |
| XXL | 185–191 | 95–104 | 114–119 | 94–99 |
| XXXL | 188–193 | 104–113 | 119–124 | 99–112 |
Body measurements in inches.
| Size | Bust | Waist | Hip |
|---|---|---|---|
| XS (0-1) | 32–33" | 24–25" | 34–35" |
| S (3-5) | 34–35" | 26–27" | 36–37" |
| M (7-9) | 36–37" | 28–29" | 38–39" |
| L (11-13) | 38.5–40" | 30.5–32" | 40.5–42" |
| XL (15) | 41.5" | 33.5" | 43.5" |
Body measurements in inches.
| Size | Waist | Hip | Inseam |
|---|---|---|---|
| 24 | 24" | 35" | 27" |
| 25 | 25" | 36" | 27" |
| 26 | 26" | 37" | 27" |
| 27 | 27" | 38" | 27" |
| 28 | 28" | 39" | 27" |
| 29 | 29" | 40" | 27" |
| 30 | 30" | 41" | 27" |
| 31 | 31" | 42" | 27" |
| 32 | 32" | 43" | 27" |
Body measurements in inches.
| Size | Bust | Waist | Hip | US Cup |
|---|---|---|---|---|
| XS | 32–33" | 24–25" | 34–35" | A |
| S | 34–35" | 26–27" | 36–37" | A–B |
| M | 36–37" | 28–29" | 38–39" | B–C |
| L | 38.5–40" | 30.5–32" | 40.5–42" | C–D |
| XL | 41.5" | 33.5" | 43.5" | D |
Body measurements in inches.
| Size | Height | Weight (lbs) | Chest | Waist | Hip |
|---|---|---|---|---|---|
| 2 | 5'1"–5'3" | 90–105 | 30.5–31.5" | 24–25" | 34.5–35.5" |
| 4 | 5'3"–5'5" | 100–115 | 31.5–32.5" | 25–26" | 35.5–36.5" |
| 6S | 5'2"–5'4" | 105–120 | 32.5–34" | 26–27.5" | 36.5–38" |
| 6 | 5'4"–5'6" | 110–125 | 32.5–34" | 26–27.5" | 36.5–38" |
| 6T | 5'6"–5'8" | 115–130 | 32.5–34" | 26–27.5" | 36.5–38" |
| 8S | 5'3"–5'5" | 115–130 | 34–35.5" | 27.5–29" | 38–39.5" |
| 8 | 5'5"–5'7" | 120–135 | 34–35.5" | 27.5–29" | 38–39.5" |
| 8T | 5'7"–5'9" | 125–140 | 34–35.5" | 27.5–29" | 38–39.5" |
| 10S | 5'4"–5'6" | 125–140 | 35.5–37" | 29–30.5" | 39.5–41" |
| 10 | 5'6"–5'8" | 130–145 | 35.5–37" | 29–30.5" | 39.5–41" |
| 12 | 5'7"–5'9" | 135–155 | 37–38.5" | 30.5–32" | 41–42.5" |
| 14 | 5'9"–5'11" | 145–165 | 38.5–40" | 32–33.5" | 42.5–44" |
| 16 | 5'10"–6'0" | 155–175 | 40–41.5" | 33.5–35" | 44–45.5" |
| Size | Height (cm) | Weight (kg) | Chest (cm) | Waist (cm) | Hip (cm) |
|---|---|---|---|---|---|
| 2 | 155–160 | 41–48 | 77–80 | 61–64 | 88–90 |
| 4 | 160–165 | 45–52 | 80–83 | 64–66 | 90–93 |
| 6S | 157–162 | 48–54 | 83–86 | 66–70 | 93–97 |
| 6 | 163–168 | 50–57 | 83–86 | 66–70 | 93–97 |
| 6T | 168–173 | 52–59 | 83–86 | 66–70 | 93–97 |
| 8S | 160–165 | 52–59 | 86–90 | 70–74 | 97–100 |
| 8 | 165–170 | 54–61 | 86–90 | 70–74 | 97–100 |
| 8T | 170–175 | 57–64 | 86–90 | 70–74 | 97–100 |
| 10S | 163–168 | 57–64 | 90–94 | 74–77 | 100–104 |
| 10 | 168–173 | 59–66 | 90–94 | 74–77 | 100–104 |
| 12 | 170–175 | 61–70 | 94–98 | 77–81 | 104–108 |
| 14 | 175–180 | 66–75 | 98–102 | 81–85 | 108–112 |
| 16 | 178–183 | 70–79 | 102–106 | 85–89 | 112–116 |
Body measurements in inches.
| Size | Bust | Waist | Hip |
|---|---|---|---|
| XS | 32–33" | 24–25" | 34–35" |
| S | 34–35" | 26–27" | 36–37" |
| M | 36–37" | 28–29" | 38–39" |
| L | 38.5–40" | 30.5–32" | 40.5–42" |
| XL | 41.5" | 33.5" | 43.5" |
Body measurements in inches.
| Size | Chest | Waist |
|---|---|---|
| XS | 34–36" | 28–30" |
| S | 36–38" | 30–32" |
| M | 38–40" | 32–34" |
| L | 40–42" | 34–36" |
| XL | 42–44" | 36–38" |
| 2XL | 44–46" | 38–40" |
Body measurements in inches.
| Size | Height | Weight (lbs) | Chest | Waist |
|---|---|---|---|---|
| 4 | 3'10"–4'1" | 35–45 | 23" | 21" |
| 6 | 4'1"–4'4" | 40–55 | 24" | 22" |
| 8 | 4'4"–4'7" | 50–65 | 26" | 23" |
| 10 | 4'7"–4'10" | 60–75 | 27.5" | 24" |
| 12 | 4'10"–5'1" | 70–85 | 29" | 25" |
| 14 | 5'1"–5'4" | 80–100 | 30.5" | 26" |
| 16 | 5'4"–5'7" | 90–115 | 32" | 27" |
| Size | Height (cm) | Weight (kg) | Chest (cm) | Waist (cm) |
|---|---|---|---|---|
| 4 | 117–124 | 16–20 | 58 | 53 |
| 6 | 124–132 | 18–25 | 61 | 56 |
| 8 | 132–140 | 23–30 | 66 | 58 |
| 10 | 140–147 | 27–34 | 70 | 61 |
| 12 | 147–155 | 32–39 | 74 | 64 |
| 14 | 155–163 | 36–45 | 78 | 66 |
| 16 | 163–170 | 41–52 | 81 | 69 |
Body measurements in inches.
| Size | Height | Weight (lbs) | Chest | Waist |
|---|---|---|---|---|
| XS (6/7) | 46–49" | 47–53 | 25" | 22" |
| S (8) | 50–53" | 54–63 | 26.5" | 23" |
| M (10/12) | 54–57" | 64–75 | 28" | 24" |
| L (14/16) | 58–61" | 76–87 | 30" | 25" |
| XL (18/20) | 62–65" | 88–110 | 32" | 26" |
Body measurements in inches.
| Size | Height | Weight (lbs) | Chest | Waist | Hip |
|---|---|---|---|---|---|
| XS (6/7) | 46–49" | 47–53 | 25" | 22" | 26" |
| S (8) | 50–53" | 54–63 | 26.5" | 23" | 27.5" |
| M (10/12) | 54–57" | 64–75 | 28" | 24" | 29" |
| L (14/16) | 58–61" | 76–87 | 30" | 25" | 31" |
| XL (18/20) | 62–65" | 88–110 | 32" | 26" | 33" |
Use your US Men's/Women's shoe size.
| US Men's | US Women's | EU | UK |
|---|---|---|---|
| 4 | 5 | 36 | 3.5 |
| 5 | 6 | 37 | 4.5 |
| 6 | 7 | 38/39 | 5.5 |
| 7 | 8 | 40 | 6.5 |
| 8 | 9 | 41 | 7.5 |
| 9 | 10 | 42 | 8.5 |
| 10 | 11 | 43/44 | 9.5 |
| 11 | 12 | 45 | 10.5 |
| 12 | 13 | 46 | 11.5 |
| 13 | 14 | 47/48 | 12.5 |
| 14 | 15 | 49 | 13.5 |
Measure the circumference of your hand around the knuckles (excluding the thumb).
| Size | Hand Circumference |
|---|---|
| XS | 6.5–7" |
| S | 7–7.5" |
| M | 7.5–8" |
| L | 8–8.5" |
| XL | 8.5–9" |
| 2XL | 9–9.5" |
Talk to a REAL Pro who rides it.
Located in Cape Hatteras. No bots.Stay covered Head-to-Toe in O'Neill's premium lineup of equipment designed to shield you from the harshest conditions. Our world-class athletes search the planet for perfect surf, the R&D team at Area 52 developed product to allow you to perform in the most extreme elements and excel in the coldest climates.
O’Neill is a pioneering surf brand that helped define modern surfing—innovating everything from the first wetsuit to today’s high-performance gear built for comfort, durability, and progression in the water.
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