TECHNOLOGY: Double wall vacuum insulation engineered to keep cold temperatures up to 24 hours and hot temperatures up to 12 hours for savoring the most refreshing and flavorful drinking feeling Made from extra durable 18/8 pro-grade stainless steel that ensures pure taste and no flavor transfer BPA-free and phthalate-free safe materials FEATURES: Leakproof design eliminates water seepage and condensation Extremely lightweight with 25% smaller load while offering equal volume Easy to drink from wide mouth opening Flexible insulated cap with perforated strap and aluminum pivots for extra lightness Fits most backcountry hydration filters Compatible with Hydro Flask® Flip™ Lid and Wide Mouth Straw Lid SPECS: Volume: 32 oz. Diameter: 3.3 in. Height: 10.2 in. Weight: 11.8 oz.