Straw Lid Attachment : The straw lid accessories set is compatible with YETI Rambler 20 oz. Travel Mug only. It converts your stronghold lid to a straw lid without buying another straw lid, brings you more convenient Package Contents: Set of 2 straws, 2 leak stoppers and 2 straw toppers. You will own a straw cup by purchasing our straw lid accessories set. No need to buy other attachments Premium Material: The spill proof stoppers and straw caps are made of food-grade silicone and straws are made from Tritan. They are durable, reusable and unbreakable. they can be used many times Convenient to Drink: The straw lid accessory do not makes straw too tight fit, It is easy to sip through straw. A straw cup is more convenient to drink, especially for driving or busy time Slight Leakage: The spill stoppers block the hole on the lid, It prevent large scale leak if the straw cup tipped over accidently Upgrade your reusable water bottle with the silicone straw lid accessories set! This magnetic slider replacement kit allows you to convert your stronghold lid to a convenient straw lid without purchasing a new bottle. The straws, spill proof, and straw toppers made from food-grade, BPA-free silicone and Tritan, these accessories are safe, durable, and reusable. The magslider replacement is a breeze to install - simply remove the original slider and push the new one into place. With this versatile set, you can enjoy the convenience of a straw lid while reducing waste and saving money.