Hydro FlaskStandard Flex Cap - Vacuum flask

The Standard Flex Cap is a cap for Hydro Flask insulated bottles. It is compatible with all Standard Mouth bottles. It is the ideal cap because it helps keep drinks at the right temperature, whether they are cold or hot. It features a small strap that makes it easy to carry and open the cap.

• Compatible with all Standard Mouth bottles
• Honeycomb Insulation™ helps keep cold drinks fresh and hot drinks warm
• Durable stainless steel pivots allow the strap to move easily
• BPA-free and phthalate-free