M.S.R.&reg; Dromedary Bag Heavy-Duty: Abrasion-resistant 1,000D fabric, laminated with food-grade polyurethane, can handle everything from freezing to boiling. Versatile: Low-profile 3-in-1 cap lets you fill, drink and pour with ease. No-Hassle Attachment: Perimeter webbing allows for easy carrying and hanging. Safe Drinking: BPA-free.