Mountain Hardwear Crater Lake Long Sleeve Tops - Men's Element L. While you're soaking up that Vitamin D the Crater Lake Long Sleeve Crew has you protected from unwanted UV rays thanks to its UPF 50+ fabric. This lightweight and comfortable top also pulls double duty as a breathable baselayer when the clouds roll in and it's time to layer up. Specifications for Mountain Hardwear Crater Lake Long Sleeve Tops - Men's: Manufacturer: Mountain Hardwear Age Group: Adults Gender: Male Application: Outdoor Features of Mountain Hardwear Crater Lake Long Sleeve Tops - Men's Uses: Backpacking Camping Hiking Rock Climbing Broad Spectrum filters out harsh UVA and UVB rays UPF 50 Skin Cancer Foundation Approved Soft jersey knit with moisture wicking properties Low profile thumbholes MHW heat transfer logo at left chest Imported Package Contents: Mountain Hardwear Crater Lake Long Sleeve Tops - Men's Mountain Hardwear 1982421-436-L: Crater Lake Long Sleeve Tops - Men's Element