PRODUCT-They are made from BPA-free silicone, no harsh or dangerous chemicals.
DESIGN-Collapsible design for easy storage, can either be full extended or collapse into the shape of a ball.
CAPACITY-Large 18 ounce capacity for kids to stay hydrated with any outdoor activity whether it's hiking, camping, soccer, or just playing around the house.
EASY TO CARRY-Comes with a built-in clip to be hands free, attach it to any bag to carry it.