12 Pcs Space Wars Straw Covers Cap for 9-10mm Straws Fit Stanley Cup 40 oz 30 oz Tumbler with Handle, Reusable Drinking Straw Plugs, Stanley Accessories Straw Topper for Kids Party Favor

I looked at many other stoppers, straw caps, boots, and other accessories but I am very glad I chose this one! For one, I love how the color matches my Stanley precisely— it looks so good! And the little polar bear straw cap it came with is perfect because that’s my school’s mascot. For two, the product serves its purpose very well and now my Stanley does not leak one bit!! Very satisfied 🥰

Easy to instal, good prize, durable and really does the job!

The Stanley Cup Accessories Set in Eucalyptus is the perfect complement to your Stanley 40oz & 30oz tumblers, offering both functionality and style. This set includes 6 silicone spill-proof stoppers, 2 straw cover caps for 9-10 mm straws, and 1 silicone boot, all designed to enhance the performance and longevity of your Stanley Cup.The spill-proof stoppers are ideal for preventing leaks, making them perfect for on-the-go use. Whether you’re in the car, at the gym, or just relaxing at home, these stoppers ensure a secure, spill-free experience. The straw cover caps offer an extra layer of hygiene, keeping your straws clean and protected from dust or dirt when not in use.The silicone boot provides a durable, non-slip grip for your Stanley tumbler, protecting the base from scratches and offering added stability. The sleek Eucalyptus color gives this set a modern, stylish look that perfectly matches your tumbler, while the silicone material ensures a flexible, long-lasting accessory that won’t wear out easily.Highly recommended for Stanley Cup owners who want to elevate their drinking experience, the Stanley Cup Accessories Set offers thoughtful, practical features that keep your tumbler clean, secure, and looking great. It’s a must-have set for anyone who values convenience, durability, and style.

I bought this set mainly for the boot for the bottom of my Stanley and the cute straw toppers. When I saw it came with 2 pieces that make the cup spill-proof, I was sold.The boot is a perfect fit and color to match my rose quartz tumbler. The toppers are adorable and functional.But the pieces that fit in the lid to make it spill-proof makes drinking an embarrassment. I should have known that spill-proof also means airtight. So when I suck water out of the straw and take my lips away, the vacuum that is created makes a loud thud as the pressure is equalized. That may be fine if you are at a concert or festival where you can’t even hear yourself talking. But for everyday life and out in public where people can hear you, it’s cringey. The pieces are not easy to take off, either. So it’s not like you can just pop them in and out when needed.Other than that issue, I am happy with my purchase.

This does prevent spills from a Stanley cup. They’re cute too.

Makes a good seal on the straw Fits great keeps dust and bugs out

Cute, cool, and fits perfect on a Stanley.

Yes, I know it's not baby Yoda, but sometimes I forget how to spell his name. :) But they are super cute and people notice them when I use them on my straw.