Made for adventures, the Men's Granite Lake Wicking Quick-Dry T-Shirt is made of 100% Polyester and ReBOTL™ fabric containing at least 40% recycled polyester. Moisture is absorbed from the skin and allowed to evaporate quickly, helping keep you feeling dry and ready for action. The ReBOTL™ material used in Timberland® apparel contains at least 40% recycled PET (recycled polyethylene terephthalate, the stuff plastic bottles are made of). The ReBOTL™ material used in Timberland® footwear and accessories contains at least 50% recycled PET. (Excepting trace materials)