The GoSili Reusable Silicone Straw Cup is the first silicone cup that will hold its shape! Perfect for little hands and big squeezes. GoSili reusable cups are made with 100% European grade platinum silicone and feature an embedded stainless-steel ring that prevents the cup from collapsing when gripped. Smart, simple design meets amazing functionality! GoSili's patented technology paves the way for a new drinking experience and is the perfect alternative to all the excessive plastic kids cups that end up in our landfills and oceans.GoSili cups are incredibly durable, can grow with your child, and are meant to last a lifetime…which is kind of the point! It’s an easy, sustainable solution to kicking the single-use cup habit whether at home or on-the go. All components of the GoSili cup are dishwasher and microwave safe and can be boiled to sterilize. GoSili Straw Cups come with interchangeable lids meant to work with all our 8oz, 12oz, 16oz and 24oz cups. Mix and match all day long!On behalf of our planet, thank you for making the choice to waste less, and GoSili.