Royal Robbins Performance Waffle has a casual look but was developed for the trail. Its soft waffle face offers surface texture and interest while its back side is smooth and engineered to be pack and harness friendly. At 6 oz., featuring moisture wicking and UPF 50+ sun protection, this is a great year round fabric. Traditional fit. Wrinkle resistant. Quick dry. Moisture wicking. Rotated shoulder seams. Full length side seam gusset 1/4 zip. 11" zipper length.