The SA Roll-Up Water Bottle is meant for an active outdoor lifestyle. It is Eco-Friendly BPA-Free food grade silicone and holds 20 ounces of liquid. You can take it anywhere as it rolls up without any added bulk when packing. To use the bottle simply unhook the silicone strap and release the built-in straw at the top and the bottle will self-inflate. Fill it up with your preferred drink for your adventures and don't worry about spills or leaks as this bottle is designed to be leak proof.