Hydro Flask Lightweight Standard-Mouth Vacuum Water Bottle - 21 fl. oz.

25% lighter than Hydro FLask's other 21 oz Standard Mouth bottles means this lightweight stainless steel bottle weighs less so you can do more
18/8 pro-grade stainless steel walls are thinner to reduce weight while maintaining durability
Honeycomb insulated Standard Mouth cap with a flexible perforated strap and aluminum pivots cut weight in a leakproof design
TempShield double wall vacuum insulation keeps beverages cold for up to 24 hours and hot up to 12 hours
Leak proof