17oz/500ml Unique and stylish design collapsible silicone sports water bottle. Reusable water canteens, great use for outdoor sports and travel, like running, camping, cycling and hiking. Material of 100% food grade silicone silicone, no aftertaste or after taste, recyclable, durable and health friendly, refillable designed for easy clean, usage and durability,Carry everywhere: wide opening, Soft, small, tight, lightweight, stain resistant, reliable, impact resistant, virtually unbreakable water bottles.