Waterproof 044-122-00 O1 Overvest 5mm With Hood Mens
In stock — ships from Irvine, CA
This item is currently on backorder. Order now to reserve yours, and we will ship it as soon as it is back in stock.
Waterproof 044-122-00 O1 Overvest 5mm With Hood Mens - M (Medium) is backordered and will ship as soon as it is back in stock.
Pickup currently unavailable at In Store
Waterproof men’s sizing for wetsuits and drysuits. These are body measurements, shown in inches with centimeters underneath.
+ = Plus · T = Tall · T+ = Tall Plus · EU = European size code
Height
Height range for each suit type.
| Size | Wetsuit | Drysuit, back zip | Drysuit, front zip |
|---|---|---|---|
| Standard sizes | |||
|
3XS EU C42 |
5′5″–5′7″ 165–171 cm |
5′5″–5′8″ 165–173 cm |
5′5″–5′10″ 165–177 cm |
|
2XS EU C44 |
5′6″–5′8″ 167–173 cm |
5′6″–5′9″ 167–175 cm |
5′6″–5′10″ 167–179 cm |
|
XS EU C46 |
5′7″–5′9″ 169–175 cm |
5′7″–5′10″ 169–177 cm |
5′7″–5′11″ 169–181 cm |
|
S EU C48 |
5′7″–5′10″ 171–177 cm |
5′7″–5′10″ 171–179 cm |
5′7″–6′0″ 171–183 cm |
|
M EU C50 |
5′8″–5′10″ 173–179 cm |
5′8″–5′11″ 173–181 cm |
5′8″–6′1″ 173–185 cm |
|
ML EU C52 |
5′9″–5′11″ 175–181 cm |
5′9″–6′0″ 175–183 cm |
5′9″–6′2″ 175–187 cm |
|
L EU C54 |
5′10″–6′0″ 177–183 cm |
5′10″–6′1″ 177–185 cm |
5′10″–6′2″ 177–189 cm |
|
XL EU C56 |
5′10″–6′1″ 179–185 cm |
5′10″–6′2″ 179–187 cm |
5′10″–6′3″ 179–191 cm |
|
2XL EU C58 |
5′11″–6′2″ 181–187 cm |
5′11″–6′2″ 181–189 cm |
5′11″–6′4″ 181–193 cm |
|
3XL EU C60 |
6′0″–6′2″ 183–189 cm |
6′0″–6′3″ 183–191 cm |
6′0″–6′5″ 183–195 cm |
| Plus sizes (+) | |||
|
M+ EU F50 |
5′8″–5′10″ 173–179 cm |
5′8″–5′11″ 173–181 cm |
5′8″–6′1″ 173–185 cm |
|
L+ EU F54 |
5′10″–6′0″ 177–183 cm |
5′10″–6′1″ 177–185 cm |
5′10″–6′2″ 177–189 cm |
| Tall sizes (T) | |||
|
ST EU C148 |
5′10″–6′1″ 179–185 cm |
5′10″–6′2″ 179–187 cm |
5′10″–6′3″ 179–191 cm |
|
MT EU C150 |
5′11″–6′2″ 181–187 cm |
5′11″–6′2″ 181–189 cm |
5′11″–6′4″ 181–193 cm |
|
MLT EU C152 |
6′0″–6′2″ 183–189 cm |
6′0″–6′3″ 183–191 cm |
6′0″–6′5″ 183–195 cm |
|
LT EU C154 |
6′1″–6′3″ 185–191 cm |
6′1″–6′4″ 185–193 cm |
6′1″–6′6″ 185–197 cm |
|
XLT EU C156 |
6′2″–6′4″ 187–193 cm |
6′2″–6′5″ 187–195 cm |
6′2″–6′6″ 187–199 cm |
|
2XLT EU C158 |
6′2″–6′5″ 189–195 cm |
6′2″–6′6″ 189–197 cm |
6′2″–6′7″ 189–201 cm |
| Tall Plus (T+) | |||
|
3XLT+ EU F160 |
6′3″–6′5″ 190–196 cm |
6′3″–6′6″ 190–198 cm |
6′3″–6′8″ 190–202 cm |
Chest, waist, hips & neck
| Size | Chest | Waist | Hips | Neck |
|---|---|---|---|---|
| Standard sizes | ||||
|
3XS EU C42 |
33.1″ 84 cm |
26.8″ 68 cm |
33.1″ 84 cm |
13.8″ 35 cm |
|
2XS EU C44 |
34.6″ 88 cm |
28.7″ 73 cm |
34.6″ 88 cm |
14.2″ 36 cm |
|
XS EU C46 |
36.2″ 92 cm |
30.7″ 78 cm |
36.2″ 92 cm |
14.6″ 37 cm |
|
S EU C48 |
37.8″ 96 cm |
32.7″ 83 cm |
37.8″ 96 cm |
15.0″ 38 cm |
|
M EU C50 |
39.4″ 100 cm |
34.6″ 88 cm |
39.4″ 100 cm |
15.4″ 39 cm |
|
ML EU C52 |
40.9″ 104 cm |
36.6″ 93 cm |
40.9″ 104 cm |
15.7″ 40 cm |
|
L EU C54 |
42.5″ 108 cm |
38.6″ 98 cm |
42.5″ 108 cm |
16.1″ 41 cm |
|
XL EU C56 |
44.1″ 112 cm |
40.6″ 103 cm |
44.1″ 112 cm |
16.5″ 42 cm |
|
2XL EU C58 |
45.7″ 116 cm |
42.5″ 108 cm |
45.7″ 116 cm |
16.9″ 43 cm |
|
3XL EU C60 |
47.2″ 120 cm |
44.5″ 113 cm |
47.2″ 120 cm |
17.3″ 44 cm |
| Plus sizes (+) | ||||
|
M+ EU F50 |
42.5″ 108 cm |
41.7″ 106 cm |
41.7″ 106 cm |
16.1″ 41 cm |
|
L+ EU F54 |
45.7″ 116 cm |
45.7″ 116 cm |
44.9″ 114 cm |
16.9″ 43 cm |
| Tall sizes (T) | ||||
|
ST EU C148 |
37.8″ 96 cm |
32.7″ 83 cm |
37.8″ 96 cm |
15.0″ 38 cm |
|
MT EU C150 |
39.4″ 100 cm |
34.6″ 88 cm |
39.4″ 100 cm |
15.4″ 39 cm |
|
MLT EU C152 |
40.9″ 104 cm |
36.6″ 93 cm |
40.9″ 104 cm |
15.7″ 40 cm |
|
LT EU C154 |
42.5″ 108 cm |
38.6″ 98 cm |
42.5″ 108 cm |
16.1″ 41 cm |
|
XLT EU C156 |
44.1″ 112 cm |
40.6″ 103 cm |
44.1″ 112 cm |
16.5″ 42 cm |
|
2XLT EU C158 |
45.7″ 116 cm |
42.5″ 108 cm |
45.7″ 116 cm |
16.9″ 43 cm |
| Tall Plus (T+) | ||||
|
3XLT+ EU F160 |
50.4″ 128 cm |
51.6″ 131 cm |
49.6″ 126 cm |
18.1″ 46 cm |
Lengths
| Size | Neck to crotch | Neck to wrist | Crotch to floor (drysuit) | Crotch to ankle (wetsuit) |
|---|---|---|---|---|
| Standard sizes | ||||
|
3XS EU C42 |
30.7″ 78 cm |
28.0″ 71 cm |
31.1″ 79 cm |
27.2″ 69 cm |
|
2XS EU C44 |
31.1″ 79 cm |
28.3″ 72 cm |
31.5″ 80 cm |
27.6″ 70 cm |
|
XS EU C46 |
31.5″ 80 cm |
28.7″ 73 cm |
31.9″ 81 cm |
28.0″ 71 cm |
|
S EU C48 |
31.9″ 81 cm |
29.1″ 74 cm |
32.3″ 82 cm |
28.3″ 72 cm |
|
M EU C50 |
32.3″ 82 cm |
29.5″ 75 cm |
32.7″ 83 cm |
28.7″ 73 cm |
|
ML EU C52 |
32.7″ 83 cm |
29.9″ 76 cm |
33.1″ 84 cm |
29.1″ 74 cm |
|
L EU C54 |
33.1″ 84 cm |
30.3″ 77 cm |
33.5″ 85 cm |
29.5″ 75 cm |
|
XL EU C56 |
33.5″ 85 cm |
30.7″ 78 cm |
33.9″ 86 cm |
29.9″ 76 cm |
|
2XL EU C58 |
33.9″ 86 cm |
31.1″ 79 cm |
34.3″ 87 cm |
30.3″ 77 cm |
|
3XL EU C60 |
34.3″ 87 cm |
31.5″ 80 cm |
34.6″ 88 cm |
30.7″ 78 cm |
| Plus sizes (+) | ||||
|
M+ EU F50 |
33.5″ 85 cm |
29.5″ 75 cm |
32.7″ 83 cm |
28.7″ 73 cm |
|
L+ EU F54 |
34.3″ 87 cm |
30.3″ 77 cm |
33.5″ 85 cm |
29.5″ 75 cm |
| Tall sizes (T) | ||||
|
ST EU C148 |
33.1″ 84 cm |
30.3″ 77 cm |
34.3″ 87 cm |
30.3″ 77 cm |
|
MT EU C150 |
33.5″ 85 cm |
30.7″ 78 cm |
34.6″ 88 cm |
30.7″ 78 cm |
|
MLT EU C152 |
33.9″ 86 cm |
31.1″ 79 cm |
35.0″ 89 cm |
31.1″ 79 cm |
|
LT EU C154 |
34.3″ 87 cm |
31.5″ 80 cm |
35.4″ 90 cm |
31.5″ 80 cm |
|
XLT EU C156 |
34.6″ 88 cm |
31.9″ 81 cm |
35.8″ 91 cm |
31.9″ 81 cm |
|
2XLT EU C158 |
35.0″ 89 cm |
32.3″ 82 cm |
36.2″ 92 cm |
32.3″ 82 cm |
| Tall Plus (T+) | ||||
|
3XLT+ EU F160 |
36.6″ 93 cm |
32.7″ 83 cm |
36.6″ 93 cm |
32.7″ 83 cm |
Head & feet
| Size | Head | Foot length | Dryboot size | EU boot |
|---|---|---|---|---|
| Standard sizes | ||||
|
3XS EU C42 |
22.0″ 56 cm |
— | — | — |
|
2XS EU C44 |
22.0″ 56 cm |
— | — | — |
|
XS EU C46 |
22.4″ 57 cm |
10.2″ 26 cm |
26 | 38–39 |
|
S EU C48 |
22.4″ 57 cm |
10.6″ 27 cm |
27 | 40–42 |
|
M EU C50 |
22.8″ 58 cm |
10.6″ 27 cm |
27 | 40–42 |
|
ML EU C52 |
22.8″ 58 cm |
11.0″ 28 cm |
28 | 43–44 |
|
L EU C54 |
22.8″ 58 cm |
11.0″ 28 cm |
28 | 43–44 |
|
XL EU C56 |
23.2″ 59 cm |
11.4″ 29 cm |
29 | 44–45 |
|
2XL EU C58 |
23.2″ 59 cm |
11.8″ 30 cm |
30 | 46–47 |
|
3XL EU C60 |
23.6″ 60 cm |
12.2″ 31 cm |
31 | 47–48 |
| Plus sizes (+) | ||||
|
M+ EU F50 |
22.8″ 58 cm |
10.6″ 27 cm |
27 | 40–42 |
|
L+ EU F54 |
22.8″ 58 cm |
11.0″ 28 cm |
28 | 43–44 |
| Tall sizes (T) | ||||
|
ST EU C148 |
22.8″ 58 cm |
— | — | — |
|
MT EU C150 |
22.8″ 58 cm |
11.0″ 28 cm |
28 | 43–44 |
|
MLT EU C152 |
22.8″ 58 cm |
11.4″ 29 cm |
29 | 44–45 |
|
LT EU C154 |
23.2″ 59 cm |
11.4″ 29 cm |
29 | 44–45 |
|
XLT EU C156 |
23.2″ 59 cm |
11.8″ 30 cm |
30 | 46–47 |
|
2XLT EU C158 |
23.2″ 59 cm |
12.2″ 31 cm |
31 | 47–48 |
| Tall Plus (T+) | ||||
|
3XLT+ EU F160 |
23.6″ 60 cm |
12.2″ 31 cm |
31 | 47–48 |
Waterproof’s chart gives dryboot size and foot length as the same number (cm).
Source: Waterproof’s official size chart (cm). Inches are converted from centimeters — heights to the nearest inch, other measurements to the nearest 0.1″. View the original chart.
Waterproof 044-122-00 O1 Overvest 5mm With Hood Mens - M (Medium) is backordered and will ship as soon as it is back in stock.
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Product Information
The Waterproof O1 Overvest 5mm With Hood (Men) is a hooded neoprene overvest from the Neoflex series, built to be worn over a regular wetsuit for extra warmth on cold dives. It pairs a 5mm body in 100% microcell limestone CR neoprene with a fixed 7mm double-layered hood, a glideskin face seal and a YKK #10 Vislon inverted front zipper.
Who it is for
This vest is for male divers who already own a wetsuit but need more insulation for cold water, long dives, repetitive dives or seasons when the same suit is no longer enough. Because it layers over existing exposure protection, it is a practical way to extend one suit across a wider temperature range instead of buying a thicker suit. The gender-specific cut provides lift and support for male divers. The 3D sculpted shape is designed for maximum anatomical fit.
Key details
- 5mm body, 7mm double-layered hood with glideskin face seal and HAVS (Hood Air Venting System) to release trapped air.
- Neoflex four-way super stretch, 100% microcell limestone CR neoprene with extended super-stretch thermal lining.
- Glued and blind stitched seams with bonded high-quality nylon thread.
- YKK #10 Vislon front zipper with corrosion-free slider, EasyGrip puller and inverted design ending at the chest.
- Anti-slip polyurethane print at the shoulders and waist to hold the BCD and weight belt in place.
- Detachable beaver tail with double Velcro locks and fasteners.
- Color: Black. Shipped in 100% plastic-free packaging.
Compatibility and sizing
The O1 is designed as a Neoflex series companion piece to be worn over a regular wetsuit. Men's sizes run S, M, ML, L, LT, XL, XLT, 2XL, 2XLT and 3XLT+, including tall cuts for longer torsos.
DiveCatalog.com is an authorized Waterproof dealer and a real dive shop in Irvine, California since 2003. Call 888-701-4017 or start a chat if you want help choosing between a standard and a tall size, or checking how the vest layers over the suit you already dive.
- 5mm Neoflex neoprene 100% microcell limestone CR neoprene with four-way super stretch for warmth, memory and durability.
- Fixed 7mm hood 3D-shaped and ventilated, with double-layered protection in critical heat loss areas and a glideskin face seal.
- HAVS venting Hood Air Venting System releases trapped air from inside the hood.
- YKK #10 Vislon front zipper Corrosion-free slider with an inverted design that ends at the chest for a closed face seal and easier head movement.
- EasyGrip zipper puller Makes opening and closing the front zipper easier.
- Extended thermal lining Super-stretch thermal lining for a warmer, softer and more comfortable feel next to the skin.
- Glued and blind stitched seams Sewn with bonded high-quality nylon thread.
- Anti-slip polyurethane print Applied at the shoulders and waist to keep the BCD and weight belt from sliding.
- Detachable beaver tail Double Velcro locks and fasteners hold the vest in position, and the tail can be removed.
- Anatomical 3D fit Sculpted for maximum anatomical fit, with a gender-specific design offering lift and support for male divers.
- Worn over a wetsuit Neoflex series overvest intended to layer over your regular wetsuit for added insulation.
- Plastic-free packaging Supplied in 100% plastic-free packaging.
| Product | Waterproof O1 Overvest 5mm With Hood, Men |
| Body thickness | 5mm |
| Hood thickness | 7mm, double-layered |
| Material | Neoflex super-stretch, 100% microcell limestone CR neoprene |
| Stretch | Four-way super stretch |
| Lining | Extended super-stretch thermal lining |
| Seams | Glued and blind stitched, bonded high-quality nylon thread |
| Front zipper | YKK #10 Vislon, corrosion-free slider, inverted design, EasyGrip puller |
| Hood features | 3D-shaped, ventilated, glideskin face seal, HAVS |
| Grip panels | Anti-slip polyurethane print at shoulders and waist |
| Beaver tail | Detachable, double Velcro locks and fasteners |
| Fit | 3D sculpted anatomical fit, gender-specific for men |
| Color | Black |
| Men's sizes | S, M, ML, L, LT, XL, XLT, 2XL, 2XLT, 3XLT+ |
| Series | Waterproof Neoflex |
| Manufacturer article number | 044-1 |
| Packaging | 100% plastic-free |
| Warranty | Worldwide warranty available, user manual provided |
⚠️ WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
Frequently Asked Questions
What thickness of dive boots, gloves, or hood should I choose?
As a general rule, thicker neoprene insulates more, so colder water pushes you toward thicker accessories, but fit, dive length, and personal cold tolerance matter as much as the millimeter number. Divers commonly lose a great deal of heat through the head, so a hood is often the highest-value warmth upgrade for the money. Remember that every added piece of neoprene also adds buoyancy you will need to account for.
How should dive boots fit?
Boots should fit like a snug athletic shoe, with no heel lift and no crushed toes; a little water inside is normal, a sloshing pocket is not. Try them on with the socks you would actually dive, and remember your fin foot pocket has to accommodate the boot. Hard-sole boots protect on rocky shore entries, while soft-sole boots are lighter and pack smaller for boat and travel diving.
How should dive gloves fit?
Gloves should be snug across the palm with fingertips reaching the ends without bunching, since trapped air and loose fingertips destroy dexterity. Thicker gloves are warmer but make buckles, clips, and inflator buttons harder to operate, so choose the thinnest glove that keeps you comfortable in your conditions. Try working a clip or buckle while wearing them before you commit.
How should a dive hood fit?
A hood should seal around the face and neck without restricting your throat or jaw, and lie flat on your head without pulling the mask strap out of position. A loose hood flushes cold water continuously, while an overly tight one is distracting and uncomfortable. Many hoods have a vent to release air trapped during descent, so check yours and burp out any trapped air before you go down.
Why does new neoprene feel so tight?
New neoprene compresses and relaxes with use, so a boot, glove, or hood that feels firm out of the packaging usually settles slightly after a few dives. It should still be snug afterward rather than loose, because neoprene that stretches into a loose fit was probably oversized to begin with. Buy for a snug fit when new, but never for a fit that restricts circulation or breathing.
Do I need to change my weighting when I add a hood, gloves, and boots?
Yes, because every piece of neoprene you add is buoyancy, and a hood, boots, and thick gloves together can shift your weighting noticeably. Do a proper buoyancy check any time you change your exposure protection rather than assuming your usual weight still works. The weight-check procedure is covered in your training, and a dive professional can help you re-do it.
How do I care for dive boots, gloves, and hoods?
Rinse them inside and out in fresh water after every dive day, since they hold sweat and salt more than any other gear, and dry them fully inside-out before packing. Dry them out of direct sunlight and never on a heater, because heat hardens neoprene and weakens glued seams. Store them dry and unfolded, as damp neoprene sealed in a bag is how gear picks up a permanent smell.
Where can I buy the Waterproof O1 Overvest 5mm with hood?
You can buy it from DiveCatalog.com, an authorized Waterproof dealer and a dive shop in Irvine, California since 2003. Men's sizes S, M, ML, L, LT, XL, XLT, 2XL, 2XLT and 3XLT+ are listed in black. If you are unsure whether a standard or tall cut suits your torso length, call 888-701-4017 or start a chat before ordering.
Do I wear the O1 Overvest under or over my wetsuit?
Over it. The O1 is a Neoflex series overvest designed to be worn on top of a regular wetsuit to add insulation for cold dives. Because the 5mm body and fixed 7mm hood layer outside your suit, the hood seals at the face with glideskin and the inverted YKK zipper ends at the chest, keeping the neck area closed and head movement easy.
What does the HAVS hood venting system do?
HAVS stands for Hood Air Venting System and it releases air trapped inside the hood. Air pockets in a hood can lift it off the head and make equalizing or descending awkward, so the vent lets that air escape. The O1 hood is also 3D-shaped and ventilated, with double-layered 7mm neoprene in critical heat loss areas and a glideskin face seal.
Will the overvest slide around under my BCD and weight belt?
It is built to resist that. The O1 has anti-slip polyurethane print at the shoulders and waist so the BCD shoulder straps and weight belt stay put, plus a detachable beaver tail with double Velcro locks and fasteners that holds the vest down in position. The beaver tail can be removed if you prefer to dive without it.















