The Gill Hydrophobe Top is a high-performance thermal base layer designed for sailing and watersports. Worn under a wetsuit, drysuit or spray top, it delivers lightweight warmth, close-fitting comfort and dependable protection in cold and changeable conditions.
Constructed from a soft, fast-drying polypropylene blend with 4-way stretch, the Hydrophobe Top moves naturally with your body while maintaining a comfortable next-to-skin fit. The fabric provides effective thermal insulation and UPF 50+ sun protection, making it suitable for year-round use — from cold-water sessions to sunnier training days.
Flatlocked seams minimise irritation during active movement, while integrated thumb loops keep sleeves securely in place when layering, preventing bunching inside wetsuits or drysuits. Lightweight, breathable and quick-drying, it helps regulate body temperature and maintain comfort during long days on the water.
Whether used as a technical base layer beneath neoprene or as an insulating layer under outer shells, the Hydrophobe Top is an essential piece of sailing kit for dependable all-season performance.
Ideal for: Sailing, paddling, dinghy racing and cold-water watersports
Technology: Thermal protection | 4-way stretch | UPF 50+ sun protection
Key features:
- Thermal fabric for lightweight insulation
- 4-way stretch for unrestricted movement
- UPF 50+ protection against harmful UV rays
- Flatlocked seams for reduced irritation and enhanced comfort
- Integrated thumb loops to keep sleeves securely in place
- Fast-drying, breathable construction
- Close-to-skin fit ideal for layering
Gill Men’s Size Guide
All Gill men’s products are designed to offer a technical, performance fit. Use the guide below to find the size that’s right for you. If you are between sizes and layering for offshore sailing, we recommend sizing up.
| Size | XS | S | M | MT | L | XL | XLT | XXL | XXXL | XXXXL |
|---|---|---|---|---|---|---|---|---|---|---|
| Average Height | 5’2″–5’4″ (158–163cm) | 5’4″–5’7″ (163–170cm) | 5’7″–5’10″ (170–178cm) | 6’2″–6’3″ (188–191cm) | 5’10″–6’1″ (178–186cm) | 6’1″–6’2″ (186–188cm) | 6’3″–6’5″ (193–197cm) | 6’2″–6’3″ (188–191cm) | 6’2″–6’3″ (188–191cm) | 6’2″–6’3″ (188–191cm) |
| Chest | 34″–36″ (87–92cm) | 36″–38″ (92–97cm) | 38″–40″ (97–102cm) | 38″–40″ (97–102cm) | 41″–43″ (104–109cm) | 44″–46″ (112–119cm) | 44″–46″ (112–119cm) | 47″–49″ (120–125cm) | 50″–52″ (127–132cm) | 55″–58″ (140–148cm) |
| Waist | 28″ (71cm) | 29″–30″ (74–76cm) | 31″–33″ (79–84cm) | 31″–33″ (79–84cm) | 34″–37″ (87–94cm) | 38″–40″ (97–102cm) | 38″–40″ (97–102cm) | 41″–43″ (104–109cm) | 44″–45″ (112–115cm) | 49″–52″ (125–132cm) |
All metric measurements are in centimetres and have been rounded to the nearest 0.5cm.
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