A Lightweight Wicking Base Layer With Good Thermal Properties Suitable For Varying Temperatures From Extreme Hot To Cold. Fast Drying And Easy To Wash So If You Are Travelling These Can Be Rinsed Out Each Night And Will Be Ready To Wear By The Morning. Now With Anti-Odour Dopped Back Wicks Away Moisture Stops Skin Sticking To Outer Layers Prevents Chaffing Easy To Wash Quick Drying Anti Odur Flat Seams