It’s compatible with *deep breath* Stanley, Simple Modern, Yeti, Owala, Hydro Flask, Reduce, Maars, Meoky, MaxBase, Beast, Hydrapeak, aaaand more.
Promising review: “They keep my mind at ease because I know that they will not leak and bugs will not get in my water. They’re super easy to clean and they’re leakproof. They will last a long time.” —rb
Get a six-pack from Amazon for $5.89 (available in 21 colors).