FEATURES:
- Compatible with any size Hydro Flask® standard mouth insulated bottle
- Insulated to enhance and protect your drink’s temperature
- Provides easy, one-hand operation for sipping on the go
- Quick flow rate offers plenty of hydration
- Quiet, no-whistle valve
- Soft silicone design
- Unique, ergonomic design
- BPA and phthalates free
SPECS:
- Mouth diameter: 48.5mm
- Weight: 36.7g