Only compatible with HYDRO FLASK Tumbler 28 oz to 40 oz: (Tumbler not included). Plastic straws reusable are perfectly compatible with hydro flask all around travel tumbler with handle. 8.78'' in length. The replacement straw compatible with hydro flask are long enough so they can be cut down to fit in shorter cups. Essential Accessory compatible with Hydro Flask Travel Tumbler: The tumbler straw cover seals the straw compatible with hydro flask and keeps away from dust and bug. Our straw caps are small in shape and portable. They can prevent water from spilling when you move. Especially suitable for camping, walking and other outdoor activities. Made of 100% Food Grade Material: Our silicone straw tips are carefully made of silicone and our plastic straws are made of food grade thick plastic so they are pretty hefty and stand up to constant use. No odor. Value Pack: Comes with 6 pcs straw + 4 pcs straw caps + 2 straw brushes. You can share them with your friends or family. Please note that the straw lid is not included. Easy to Use: Greant straw cover can compatible with hydroflask tumbler straw lid. Even if the straw protector is open, it can easily hang on the side of the straw and won't be lost. They are small in shape and portable. Protective Straw Topper: 4 different colors of silicone straw covers cap compatible with hydro flask tumblers are suitable for straws with a diameter of 10mm. High quality material and 2mm hard thickness make our straws less likely to crack. There is no odor and you can wash them easily with included straw brush.