With a Silipint Straw Tumbler in hand, you can go where no other drinkware can… everywhere! That’s because our tumblers are made from naturally occurring silica: a durable, non-toxic material that is flexible, durable, and can handle the heat So go ahead, take this tough-as-nails tumbler anywhere and put it to the test - whether it's iced coffee, hydration on the go, a refreshing smoothie, or an extra thick milkshake, this 22oz unbreakable companion never takes a break so you never miss a moment Cheers!