Sea to Summit Frontier UL Collapsible Cup

A BPA-free and ultra lightweight collapsible cup. The Frontier Cup&';s flexible silicone walls collapse easily, making it a pocket-sized drinking cup you can take anywhere. The rigid rim maintains its shape and is heat resistant for your safety and peace of mind. Features : a Nests into Frontier 2L collapsible pota Collapses flat to 17mm for compact packinga BPA-free, food-grade, heat resistant, flexible silicone sidesa Nylon rings at the top, middle and base maintain shapeand prevent fingertips from being scalded Specifications : SIZES: One Size (53g / 400ml)