The MSR Dromedary Bags are made from 1000 denier fabric, making them the toughest water bladders out there. Made for expedition purposes as water storage they are able to withstand extreme temperature variations, from freezing to boiling and are laminated with food-grade lining so the water inside doesn't pick up a bad taste. A low profile 3 in 1 cap keeps them small when packed and allows for easy filling, drinking and pouring whilst grommets and webbing down each side gives plenty of attachment options. The Dromedary bags are compatible with MSR Miniworks water filter (63mm cap size) and are easily converted into a hands free hydration system using the MSR Hydration Kit. MSR Dromedary Bags Features Heavy-Duty, 1000 denier abrasion-resistant fabric is laminated with food-grade lining Versatile 3-in-1 low profile cap Perimeter grommets and webbing allows for convenient pack attachment and hanging BPA-free Capacity Dimensions Weight 4 litre 25.4 x 46.5cm 196g 6 litre 28.7 x 52.3cm 247g 10 litre 31.8 x 58.4cm 284g MSR Dromedary Bags