Sizes: XS – 3XL, 5XL; Fabric: 100% Certified recycled PET polyester,BIZ COOL Breathable sports knit,155 GSM,UPF Rating: 50+; Features: Breathable BIZ COOL sports knit keeps you cool and dry,Self-fabric rounded neck opening fits comfortably and sits neat,Longer length can be worn out or tucked in,This garment is made from 100% recycled polyester resulting in the equivalent of 10 plastic bottles being diverted from landfill;