Boli Collapsible Water Bottle (Set of 5) 16 Ounce Capacity, BL6014-B5 BPA Free with FDA approved polyethylene inner-liner Rollable and Foldable with metal carabiner for clip-on and storage, Lightweight, Reusable For Travel, Hiking, Camping, The Gym, Perfect For Both Kids & Adults Stands upright when filled, Fill Halfway & Freeze To Keep Beverage Cold 5 pieces with assorted design.