7Pcs 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

Price is fantastic and so is the actual product! Works great! Love the colors that are included. Holds up well when washing. Fits my 40 oz Stanley perfectly.

I have several varieties of Stanley straw covers. These are hands down the best. They cover the straw smoothly without my having to pull to get it off for a sip of my beverage. These do not spill proof the cup but they are perfect for slowing down spills, preventing insects from getting in, and keeping the cold in the and heat out. 10/10 would recommend.

Excellent product. Fits the cup I love and solved the one deficiency I’d found. Now if the cup gets knocked over there is no leakage through the straw.

My wife had buy these after finding a fly in her straw so if you’re trying to keep bugs out of your straws, this is definitely a must!

I love being able to cover my straw so I don’t have to worry about bugs or bees being in my drink. Yes, this has happened to me before 😳