Mountain Warehouse Waffle Long Sleeve Mens T-Shirt - Round Neck Tee 100% Cotton IsoCool fabric - Fast drying, ventilating and wicking. Ideal active clothing for sports & fitness UPF30 - UV protection from harmful sun rays when travelling, camping & everyday Lightweight - Breathable, it's easy to pack,wear and travel in spring or summer Quick drying - High wicking, fast dry, absorbent and breathable. Ideal for walking