Covering : tout ce qu'il faut savoir Tech Slk Long Sleeve 1 2 Zip Shirt. A crucial addition to the adventurers wardrobe, featuring four way stretch, UPF50+ rating, quick dry ability and wrinkle resistance. The remarkable performance of Tech Slk elevates this athletic silhouette with the look and feel of traditional silk. Half zip closure traps heat or provides additional ventilation while also a stylish layering option.