Stanley Cup Accessories Set Including 6 Pcs Silicone Spill Proof Stopper, 2 Pcs Straw Cover Cap for 9-10 mm Straws, 1 Pcs Silicone Boot for Stanley Cup Stanley 40oz & 30oz Tumbler (ROSE QUARTZ)

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.

Such a fun design. Fits nice too

Edit: the round leak stopper that goes on the inside has the TINIEST air vent. So no liquid can come through, but it took a couple of washes and accidentally jamming a small cleaning brush through the hole for 1) me to realize it was there and 2) for it to loosen up enough for it to actually function in preventing the creation of a vacuum seal on the inside while drinking. Now my drinking experience is both mess-free and much easier. Just took a little breaking in and lack of observation on my part for it to work as intended. Update to 5 from 4 stars, and my original review is below to show the progression of my opinion of the product.I did the flip test on a full 32oz Stanley, and it held excellently! The straw topper is a tiny bit looser than a different topper that I have, so I have more concern about it popping off if it gets knocked over than with the other one (different purchase). But! The leak guards for the lid itself create an excellent seal! So much so that a little vacuum is created each time I take a sip since there is no longer any place for air to vent back inside while I'm drinking. Not a problem for me since I'm a sipper and not a chugger! But it might be for you if you take big swigs like my husband does. Now I won't be as anxious about my drink decorating the living room if my toddler gets a hold of my Stanley anymore.Also, the boot is really nice. My cup doesn't have the signature metallic thud when it set it down anymore (that I hated).

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

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.