5Pcs 0.4in/10mm Diameter Silicone Straw Covers Cap Compatible with Stanley 20 30&40 Oz Cup, Straw Toppers for Stanley 40 Oz Tumbler with Handle, Dust-Proof Straw Caps for Water Bottle

These straw covers fit nicely on the Stanley insulated cup straws. They are very soft and flexible and easy to clean.

Very functional and easy to clean. Comes with a lot of cute colors! Easy to use and stays on the straw. They are soft and nice material. Fit most straws. Keeps bugs and debris out of your drink. Over all good quality for your money.

To cover my cupFunctionality:These straws were designed to work, as for protecting the opening area of my Stanley cup.

Awesome! No more flies getting in my drink YAY!

Fits pretty nicely and love the colors, I really only needed one but I guess I can always give away the other ones to my family who may use reusable straws or cups like Stanley’s.Had to update from my previous bad review, I was nitpicking the fact I thought the hole didn't fit it correctly because when I bent it over I had to twist it, it's kinda hard to explain but I had to take out the bottom piece or the whole thing entirely and flipped it and now it's not awkwardly twisted. Also, I'd like to say that this cover fits Stanley straws the best, so if you have or use any other cups or skinnier straws, it won't fit as snug or perfectly.If hairs get stuck to it since it's like silicone, just wash it off of course

Lovely colors, snug fit on silicone straw on the Hydroflask Tumbler. I recommend these!

FIT SM bottle's straw. Good color and flexible. Purchase base one review's recommendation

They work great very happy.