A brick and frozen water have a couple of things in common. They’re both hard and aren’t worth a lick when you’re thirsty on a ski tour. And what could beat a slow, cold pull from your reservoir in the baking heat of summer? That’s why Platypus made this insulated reservoir sleeve. Including a deluxe Big Zip™ SL reservoir and a Bite Valve and Drink Tube Insulator, you’ll be assured your water is just the way you like it, all year long. A rugged Cordura® exterior protects your reservoir and seals up tight with a side-release buckled lid. 1.8 Liter: 60 fl. oz., 11.0 oz., 8.5 x 11 in. 2.0 Liter: 70 fl. oz., 12.4 oz., 7.5 x 17.5 in. 3.0 Liter: 100 fl. oz., 12.9 oz., 8 x 18.5 in.