Features:
Flask compresses as you drink to eliminate water sloshing around inside it.
Updated soft bite valve with higher flow rate, easy on the teeth.
Slim and lightweight fill easily with wide mouth opening.
Durable Thermoplastic Polyurethane (TPU) construction, EVA foam insulated BPA, PVC, and Phthalate free, will not taint taste; Meets FDA and EC regulation. Hydration vest compatible: fits easily in most hydration vests, belts, or pack pockets. Soft material conforms to any pocket for comfortable carrying.
Reliable and safe: 100% BPA & PVC free. Wide working temperature range (0° C- 40° C / 104-° F)

Specification:
Material: TPU
Capacity: 500ml
Weight: 62g
Standard: US FDA 21 CFR 177.1350
Features: Folding, lightweight, and BPA free
Application: climbing/hiking/cycling/running