Combining our tried-and-true UPF 50+ fabric with a modern, surf-inspired design, the lightweight, breathable Crater Lake Long Sleeve Crop shields against harsh UV rays from coastal waters to high-desert boulders. The mock neck and thumbhole cuffs serve up additional coverage for getting after it under the high-noon sun. Uses: Backpacking, Rock Climbing, Hiking, Camping Broad Spectrum filters out harsh UVA and UVB rays UPF 50 Skin Cancer Foundation Approved Soft, jersey knit with moisture wicking properties Mock neck for extra coverage Low-profile thumbholes Cropped length that meets at a high rise pant MHW heat transfer logo at left cuff Imported Fabric Body: Solar knit jersey: 88% Polyester, 12% Elastane