M WINDSTOPPER® Base Layer Long Sleeve Shirt Mens | GOREWEAR US Windproof, water resistant and breathable, Windstopper fabric technology Comfortable due to thermo-stretch functional material Comfortable due to thermo-stretch functional material. Windproof Thermal GOREWEAR Base Layer Thermo Long Sleeve Shirt - Men's - Men Windstopper Base Layer Shirts It's the ideal base layer under a thermal cycling jersey, adding extra protection for a cold-weather adventure. A breathable back panel increases heat regulation and boosts sweat-wicking performance, adding comfort when you need to put more power through the pedals Optimized flat seam placement for freedom of movement When you're planning an adventure in challenging weather conditions, make sure you get the basics right. Cycling Undershirts & Base Layers | | UK Extended back section for splash protection