- Removable, silicone boot adds extra protection to your Hydro Flask
- Medium boot fits 32 and 40 oz wide mouth bottles
- Medium boot is not compatible with 32 oz Lightweight Wide Mouth Trail Series bottles
- Lifetime Warranty
Colorful protection. Make your Hydro Flask your own with a colorful, durable silicone Flex Boot. Customize your look and protect against bumps and dings.