Waterproof Neoprene Neckseal 3mm
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 Neoprene Neckseal 3mm - M/ML (Medium / Medium Large) is backordered and will ship as soon as it is back in stock.
Pickup currently unavailable at 23D
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 Neoprene Neckseal 3mm - M/ML (Medium / Medium Large) is backordered and will ship as soon as it is back in stock.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Product Information
The Waterproof Neoprene Neckseal 3mm offers warmth for chilly dives with a superstretch neck seal that balances comfort and protection around the neck. Designed to accommodate WP, SI TECH Neck Tite, and Quick Neck systems, it ensures a snug fit and excellent insulation for extended underwater sessions in scuba environments.
Constructed from flexible neoprene with a smooth interior for comfort, it is built for dependable performance with scuba and diving gear, helping you stay warm without adding bulk during your dive.
- Material and construction: Neoprene with a smooth interior for skin-friendly comfort and durability
- Thickness: 3-4 mm range (flexible warmth without bulk)
- Compatibility: Fits WP, SI TECH Neck Tite, and Quick Neck systems for versatile diving setups
- Design: Superstretch construction with reinforced edges for easy donning and secure sealing
- Performance: Reduces water intrusion and maintains insulation during scuba and diving sessions
- Fit: Ergonomic cut to provide a snug, comfortable seal under wetsuits
| Brand | Waterproof |
| Product Type | Drysuit neck seal |
| Material | Neoprene |
| Thickness | 3 mm |
| Use | Replacement neoprene neck seal |
⚠️ 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.












