Waterproof H2 5/7mm Venting Hood
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 H2 5/7mm Venting Hood - XS (X-Small) is backordered and will ship as soon as it is back in stock.
Pickup currently unavailable at In Store
Waterproof sizing for hoods, wet boots, drysuit boots and neck seals. Head, foot and neck sizes are body measurements, shown in inches with centimeters underneath.
Hoods
| Size | Head circumference |
|---|---|
| XS |
21.9–22.0″ 55.5–56 cm |
| S |
22.2–22.4″ 56.5–57 cm |
| M |
22.6–22.8″ 57.5–58 cm |
| ML |
23.0–23.2″ 58.5–59 cm |
| L |
23.4–23.6″ 59.5–60 cm |
| XL |
23.8–24.0″ 60.5–61 cm |
| 2XL |
24.2–24.4″ 61.5–62 cm |
Wet boots
| Size | Foot length | EU shoe size |
|---|---|---|
| 2XS |
8.3–8.7″ 21–22 cm |
34–35 |
| XS |
8.9–9.3″ 22.5–23.5 cm |
36–37 |
| S |
9.4–9.8″ 24–25 cm |
38–39 |
| M |
10.0–10.4″ 25.5–26.5 cm |
40–41 |
| ML |
10.6″ 27 cm |
42 |
| L |
10.8–11.2″ 27.5–28.5 cm |
43–44 |
| XL |
11.4–11.8″ 29–30 cm |
45–46 |
| 2XL |
12.2–12.6″ 31–32 cm |
47–48 |
Drysuit boots
Marine / dryboots
| Dryboot size | EU shoe size, men | EU shoe size, women |
|---|---|---|
| 23 | — | 35 |
| 24 | — | 36 |
| 25 | — | 37 |
| 26 | 38–39 | 38–39 |
| 27 | 40–42 | 40–42 |
| 28 | 43–44 | — |
| 29 | 44–45 | — |
| 30 | 46–47 | — |
| 31 | 47–48 | — |
Waterproof’s suit charts list dryboot size as foot length in cm. Waterproof’s chart ends at dryboot size 31.
Neoprene neck seals
Unisex neoprene neck seal
| Size | Neck circumference |
|---|---|
| XS–S |
12.2–13.0″ 31–33 cm |
| M–ML |
13.4–14.6″ 34–37 cm |
| L |
15.0–15.7″ 38–40 cm |
| XL–2XL |
16.1–16.9″ 41–43 cm |
| 3XL |
17.3–18.5″ 44–47 cm |
W7 neoprene neck seals
| Size | Neck circumference, men | Neck circumference, women |
|---|---|---|
| 2XS–S |
14.2–15.4″ 36–39 cm |
12.2–13.0″ 31–33 cm |
| M–L |
15.4–16.5″ 39–42 cm |
13.0–14.2″ 33–36 cm |
| XL–3XL |
16.5–18.1″ 42–46 cm |
14.2–15.4″ 36–39 cm |
Source: Waterproof’s official size charts (cm); W7 neck seal sizes are from Waterproof’s drysuit manual. Inches are converted from centimeters, to the nearest 0.1″. View the original chart.
Waterproof H2 5/7mm Venting Hood - XS (X-Small) is backordered and will ship as soon as it is back in stock.
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Product Information
The Waterproof H2 5/7mm Venting Hood is an anatomically 3D-shaped bib hood for cold-water scuba diving, built from 100% Microcell limestone CR neoprene with 7mm double-layered protection in critical heat-loss areas, Glideskin seals at the neck and face, and the HAVS (Hood Air Venting System) one-way valves that release trapped air. It is offered in seven unisex sizes, XS through 2XL.
Who it is for
This hood suits divers in cool to cold water who want a warm, sealing hood for longer dives and repetitive dive days. This is the with-bib version, Art. No. 181-2, and Glideskin seals at the neck and face minimize flushing, the extended lining adds insulation where heat loss is greatest, and the reflective logo helps with visibility in low light and night dives. Because the head is a major route for heat loss, it is a practical upgrade for anyone extending their season.
Key details
- Thickness: 5/7mm variable protection, with 7mm double layers in critical heat-loss zones.
- Material: 100% Microcell limestone CR neoprene, super-stretch nylon and bonded high quality nylon thread.
- Sealing: Glideskin seals at both the neck and the face to minimize flushing.
- Venting: HAVS one-way valves to vent trapped air.
- Article number: 181-2 for the version with bib (the no-bib version is a separate article, 187-2).
Compatibility and sizing
Sizes are XS, S, M, ML, L, XL and 2XL (listed by Waterproof as XXL), with SKUs in the WP-H2-5/7BIB family. Sizes are XS, S, M, ML, L, XL and 2XL (listed by Waterproof as XXL), with ML as an intermediate size.
DiveCatalog.com is an authorized Waterproof dealer and a real dive shop in Irvine, California since 2003. Call or chat with us at 888-701-4017 if you want help choosing between two sizes or matching the hood to your suit.
- 3D anatomical shaping conforms to the head for comfortable, unrestricted mobility underwater.
- 5/7mm variable thickness with double-layered 7mm protection in critical heat-loss areas.
- 100% Microcell limestone CR neoprene for flexibility, insulation and long-term durability.
- Glideskin seals at the neck and face to minimize flushing of cold water.
- HAVS venting uses one-way valves to vent trapped air during the dive.
- Super-stretch nylon allows easy movement while keeping a snug fit.
- Bonded high quality nylon thread for construction that stands up to repeated dive use.
- Reflective logo adds visibility in low light and murky conditions.
- Extended lining adds insulation where heat loss matters most.
- Bib design listed by Waterproof as Art. No. 181-2.
- Seven unisex sizes from XS to 2XL, including an ML in-between size.
| Brand | Waterproof |
| Model | H2 5/7mm Venting Hood |
| Type | Vented dive hood with bib, unisex |
| Thickness | 5/7mm (variable protection) |
| Reinforced zones | 7mm double-layered in critical heat-loss areas |
| Material | 100% Microcell limestone CR neoprene with bonded nylon |
| Fabric | Super-stretch nylon |
| Thread | Bonded high quality nylon thread |
| Shaping | 3D anatomical |
| Seals | Glideskin at neck and face |
| Venting system | HAVS (Hood Air Venting System) with one-way valves |
| Lining | Extended lining |
| Visibility | Reflective logo |
| Article number (with bib) | 181-2 |
| Article number (without bib) | 187-2 (separate product) |
| Sizes | XS, S, M, ML, L, XL, 2XL (XXL) |
| SKU family | WP-H2-5/7BIB |
⚠️ 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.
What makes the H2 hood flexible?
Flexibility comes from the materials Waterproof specifies: 100% Microcell limestone CR neoprene paired with super-stretch nylon and 3D anatomical shaping. The limestone CR neoprene is listed for flexibility as well as insulation and durability. Waterproof's 3D anatomical shaping is preformed to follow the head, and super-stretch nylon allows easy movement.
What does the HAVS system on the Waterproof H2 hood do?
HAVS stands for Hood Air Venting System: one-way valves vent air trapped inside the hood.
Does this version of the H2 come with a bib?
Yes. This is the bib version, listed by Waterproof as Art. No. 181-2, and sold here under the WP-H2-5/7BIB SKU family. Waterproof also publishes a separate hood without a bib as Art. No. 187-2, which is a different product and not one of the sizes offered on this page.
Which sizes are available and what is the ML size for?
The H2 5/7mm venting hood is offered in XS, S, M, ML, L, XL and 2XL, which Waterproof lists as XXL. The hood comes in XS, S, M, ML, L, XL and 2XL (Waterproof lists XXL); ML is an intermediate medium-large size. If you are between sizes, contact us at 888-701-4017 before ordering.












