Cooling towel: 50% nylon, 50% polyester; Combo: TW106 cooling towel placed in MG205 20oz. translucent sport bottle; 20oz water bottle is made of BPA-free PET with flip-up lid and is USA made;Combo made of TW106 Cooling Towel placed in MG205 20 oz. Translucent Sport Bottle with Snap Cap; When towel is wet it cools for up to 2 hours, when dry it absorbs sweat; To activate: 1 – soak towel, 2 – ring out excess water, 3 – snap to activate (to re-activate, re-soak and snap); 20 oz water bottle is made of BPA-free PET with flip-up lid and is USA made; Product Size: 8.5″ h x 3″ dia.;