Hydroflask: 21 oz Standard Flex Cap

Product Benefits

• Versatile, middle-of-the-road size
• TempShield™ 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