Designed for cold water performance, this Women’s KONA Thermal Short Sleeve Rash Guard works as either a stand-alone thermal layer or as an extra insulating layer worn under a wetsuit. It provides excellent warmth even when wet while absorbing minimal water, helping you stay lighter, warmer, and more comfortable for longer sessions.
Popular with surfers, open water swimmers, triathletes and cold water watersports users, this thermal rash vest provides both insulation and wind resistance, making it an essential piece of kit for year-round water use.
Ideal For
- Cold water surfing and shoulder-season sessions
- Open water swimming & triathlon training for added warmth without bulk
- Stand-up paddleboarding and kayaking where wind chill becomes a factor
- Coasteering, sailing and general watersports in cooler conditions
- Layering under wetsuits to extend your usable season
Warmth Without Restriction
The Thermotech microfibre lining traps warmth efficiently while maintaining flexibility. A water-resistant outer layer reduces evaporative cooling, helping you stay warmer between sets or during rest periods. Anatomically shaped panels and 4-way stretch construction allow unrestricted movement for paddling and swimming.
Technical Features
- Polypro Thermotech lining provides excellent insulation using low-bulk microfibre fabric
- Quick-dry microfibre lining improves comfort between sessions
- Durable water-resistant coating improves warmth and water-wicking performance
- Flatlock stitched seams for breathable, comfortable construction
- 4-way stretch with anatomically shaped panels for efficient movement
- Second-skin performance fit across abdomen and shoulders
- UV protection (UPF 50+)
Fit tip: Choose a close fit for maximum thermal performance under a wetsuit. Size up if you prefer a looser fit when wearing as a stand-alone top.
Delivery Information
🏷️ *Free UK Mainland Shipping on Orders Over £50 (⚠️ excludes surfboards and soft-top SUP boards)
🇬🇧 UK & Ireland Shipping Summary
🚚 Standard Shipping
- Order before 2pm (Mon–Fri) for same-day dispatch.
- Orders after 2pm, weekends, or Bank Holidays ship next business day.
- All deliveries are fully tracked using DPD, Royal Mail or Parcelforce.
- Standard delivery takes 2–4 working days (Mon–Fri).
🚀 Express (Next Working Day) Shipping
- From £6.50 (UK Mainland only).
- Orders must be placed before 2pm to qualify.
Full shipping rates for all territories - click here.
📞 Delivery Questions?
UK Customers: 01363 773005
Outside UK: +44 1363 773005
(Mon–Fri, 09:00–16:30 UK time)
📧 Email: sales@circle-one.co.uk – we’ll get back to you ASAP!
Returns
Easy 60-day returns
- Returns accepted within 60 days of delivery
- Items must be unused and in original packaging
- Return postage covered for faulty, damaged or incorrect items
- Simple online returns via your Circle One account
For surfboards and bulky items, we recommend using a door-to-door collection service.
Why wear a Rash Vest?
Prevents chafing and rashes when worn under a wetsuit, reducing friction in high-rub areas
Higher neckline protects the neck, a common hotspot for irritation from wetsuit collars
Thermal options add extra warmth for cooler water sessions without restricting movement
Provides UV protection when worn on its own, ideal for surfing or swimming in the sun
Quick-drying fabric prevents sunburn and damp chill, keeping you comfortable in and out of the water
