【Widely used】: Perfect fit for ALL Hydro Flask wide mouth water bottles lids and most branded wide mouth sport water bottles lids (12 oz,16 oz, 18 oz, 20 oz, 32 oz, 40 oz, and 64 oz). 【Safer & Durable】:Made of food grade material, durable hard thick plastic replacement straws for hydroflask wide mouth bottle .heat-resistant and not easily crack. 【Adjustable Length】: The length of 9.7 inches plastic water bottle straw need be cut to fit your exact Hydro Flask water bottle capacity 【Easy Install】:Install the straw into the outlet. Then cut the straw according to the size of the bottle. Follow the instructions as given on the picture detail page. 【Much Easier to clean】: Just put the brush into straw and rotate the brush. You can clean the inside of the straws from top to bottom easily. Dishwasher safe. Our reusable drinking straws are made from high quality plastic, food-grade . They are perfect for use with Hydro Flasks and other water bottles. .