Purifyou silicone drinking straws are suitable for various kinds of bottles, tumblers, mugs, glasses, and cups. You can also customize the length of the straw as required and cut it to any size you want. * Premium Quality: 100% Platinum grade silicone - will not spoil any liquid it comes into contact with. Soft and friendly to your teeth. No need to worry about chipping your teeth like hard straws. * Versatile: You can also customize the length of the straw as required and cut it to any size you want. Compatible for glass water bottles, thermos, tumblers, or any drinking cups or glasses. * Convenient: The silicone is soft-easy to bend.