The Hydroflask 21oz Standard Mouth is your go-to travel companion to keep cold drinks cold and hot drinks warm whatever the season. It keeps ice for hours and fits in every standard size cup holder, no more awkward sized water bottles!
- Versatile, middle-of-the-road size
- TempShieldTM insulation eliminates condensation and keeps beverages cold up to 24 hours and hot up to 12 hours
- Durable 18/8 Pro-Grade Stainless Steel construction
- BPA-Free and Phthalate-Free
- Compatible with Standard Mouth Insulated Sport Cap
- Lifetime Warranty