MSR Dromedary Bag Heavy-Duty: Abrasion-resistant Cordura, laminated with food-grade polyurethane, can handle everything from freezing to boiling Versatile: 3-in-1 cap lets you fill, drink, and pour with ease Easy to Fill: Low profile, ergonomic handle and wide-mouth opening for no-hassle filling No-Hassle Attachment: Perimeter webbing allows for convenient pack attachment and hanging Safe Drinking: BPA-free