Features of the Marmot Men's Meeker Short Sleeve Shirt Bluesign approved fabric Marmot UpCycle product with recycled Polyester and organic Cotton Thread fabric from post-consumer recycled plastic bottles in Honduras Ultraviolet protection factor (UPF) 30 Polyester for quick drying Durable flat-felled seams Contrast inside collar stand Straight hem and single patch pocket Garment washed for soft hand Fabric Details 60% Organic Cotton, 40% Recycled Polyester plain weave 3.5 oz/yd