Generously sized for your longer pursuits, our 40 oz (1,183 ml) Lightweight Trail Series bottle is 25% lighter than our other 40 oz bottles, thanks to an innovative stainless steel design. Engineered to deliver the same cold refreshment you expect from Hydro Flask but without the weight, the Trail Series makes it easy to take your cold hydration as far as your spirit of adventure takes you. Hydro Flask 40 oz Lightweight Wide Flex Cap B Features: Ideal for lightweight hydration to keep you going further Fits most outdoor hydration filters Durable 18/8 Pro-Grade Stainless Steel construction TempShield insulation eliminates condensation and keeps beverages cold for up to 24 hours and hot for up to 12 hours Flexible perforated strap and aluminum pivots for added weight loss BPA-Free and Phthalate-Free
