SealSkinz Caston Open-Sole Cycle Overshoes: Kevlar Heel and Toe (£26.99)
The SealSkinz Caston is an open-sole overshoe for road cycling shoes, with Kevlar reinforcement and a rear zip, on sale at Tredz. We have not tested it. This page collects what Tredz lists and the current price.
Available now: SealSkinz Caston All Weather Open-Sole Cycle Overshoes — £26.99 at Tredz (listed RRP £45.00), correct at time of writing, 8 November 2026.

What the retailer lists
- Sole: open sole, so the cleat area is left clear. Tredz says it suits road cycling shoes and trainers.
- Height: 7 cm taller than before, for extra warmth and protection.
- Durability: Kevlar on the heel and toe.
- Closure: a rear zip with a pull loop, plus Velcro straps at the bottom.
- Visibility: reflective detailing on the cuff, down the back and at the heel.
Where it fits for triathletes
The points below are our reading of the listed features, not test results.
- Wet and windy training rides. SealSkinz pitches it at rain, wind and puddles on road rides. We have not tested how waterproof it is over a long ride.
- Price. At £26.99 it is £18.01 below the RRP.
Where to buy
Tredz lists the SealSkinz Caston All Weather Open-Sole Cycle Overshoes at £26.99 at time of writing, and the link below goes to the same product page.
Related guides
See also the best cycling overshoes for triathlon, the Fizik weatherproof overshoes review and the Endura road overshoes review.
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