Features the patented Big Bite valve made of medical grade silicone Supplies unmatched water flow with ease 100% free of BPA and BPS NSN: 8465-01-396-9927 Comes standard with CamelBak's Water Beast durable material, leak-proof screw cap and Big Bite valve (made of medical grade silicone). Supplies unmatched water flow and is 100% free of BPA and BPS. NSN: 8465-01-396-9927.table.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; } Color: Coyote Size: 2 Liters Stockable: Y Country Of Origin: MX