Hydro Flask Lightweight Standard Flex Cap 621 ml (21oz)

25% lighter than our 21 oz standard mouth bottles means this lightweight stainless steel bottle weighs less so you can do more.

• 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