Come and Check Our Branding Solutions.The biggest feature about the collapsible water bottle is it can foldable after you drink out. Sample and eays to folde it. Just need short time let the large water bottle to a mini water bottle. 20oz volume and inner Diam 43mm, Outer 53mm. Designed with human engineering, indentation make you none slip for this bottle. The prices include shipping cost to ca, qty over 2,000 by the ocean. Pls check inventory and detailed info before placing your orders.