600D polyester; BPA and lead free, vacuum-insulated keeps beverages cold for 12 hours; Wide twist-off top lets you add ice or protein powder quickly and easily; Adjustable cross body-shoulder strap; Non-slip silicone bottom provides quiet setdown on any surface; Carry loop for easy transport; Large opening for easy fill & cleaning with twist-to-seal lid that helps keep spout clean; 10.5"h x 3.1" dia.