The Unived Soft Flask with a straw is a flexible flask that compresses as you drink to eliminate water bouncing inside. It can be used to carry your favourite RRUNN During hydration mix or water. It comes with straws, making it easier to sip and stay hydrated. It’s PVC & BPA Free, easy to use and has a squeezable bite value. It’s made from abrasive-resistant TPU, making extremely durable.