What It Is & What It Does
Helps keep feet dry from external wet weather while allowing internally produced moisture vapour to escape.
- Best Suited To: Wet-weather walking and active use where waterproofing, wind protection and breathability are all priorities.
- Exceeds British waterproof performance standards when tested from a completely dry state.
- IMPORTANT TO KNOW: Breathable does not mean sweat-free. Socks, activity level, temperature and the upper materials all affect comfort.
Performance Built Into Every Layer
Three core functions working together inside every Sympatex® lined Grisport boot.
Pore-Free Membrane
A thin, pore-free lining barrier that blocks liquid water from entering the boot in wet conditions.
- Helps protect against rain, wet grass and muddy ground.
- Works as a dedicated lining inside the footwear.
- Selected Sympatex® styles exceed British waterproof performance standards.
Vapour Transport
Transports water vapour from the warmer, more humid inside of the boot towards the outside.
- Helps manage heat and moisture during active walking.
- Supports comfort in changing temperatures.
- Works best when paired with suitable socks and upper materials.
Wind Protection
Blocks wind from penetrating the lining, helping reduce chill on exposed trails and open ground.
- Windproof membrane for exposed outdoor use.
- Flexible construction that moves with the foot.
- Durable performance at key stress points.
Featured Sympatex® Lined Footwear
Explore recommended Grisport models featuring genuine Sympatex® lining.
Genuine Sympatex® Lining
Sympatex® is a waterproof, windproof and breathable membrane used in selected Grisport styles — flexible, durable at key stress points and designed for demanding outdoor use.
Flint Sympatex' Brown Trekking Boot
An upgraded Flint boot with premium Sympatex® lining, waterproof bootie construction and Vibram Easy-Trek sole.
£130.00
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Avenger Trekking Boot
A traditional-looking boot with military-grade Sympatex® waterproof and breathable lining for serious wet-weather use.
£130.00
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Crusader Wide Fit Boot
A wide-fit Grisport classic built for comfort, with Sympatex® lining for reliable wet-weather protection.
£165.00
Shop Now →Sympatex® FAQs
What is Sympatex® lining? +
Sympatex® is a thin, pore-free membrane used as a boot lining. It blocks liquid water and wind while allowing water vapour to escape from inside the footwear.
Can water still get into Sympatex® lined boots? +
Yes. Waterproof lining cannot prevent water entering above the collar if you step in deep water or if gaiters are not used. Care, drying and an undamaged membrane all affect long-term performance.