AONIJIE SD19 Folding Collapsible Soft Flask 450ML

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, fills easily with wide mouth opening -Durable Thermoplastic Polyurethane (TPU) construction Material：TPU Temperature Range：0 to 40 degree centigrade Capacity：0.5L Weight：36g Size: 450ml