CM Bottle Bottom Protective Cover Round Silicone Anti-Slip Cap for Water Bottle Mug Tumbler, Pack of 4 in Different Size

These rings come in multiple sizes to fit different diameters of cups. They fit the standard 20 ounce yeti cup, as well as a lot of the other brands like RTIC and such. These rubber rings cover not only the bottom, but also approximately a quarter inch up the side of the cup. I particularly like these, because they prevent a problem with the cup slightly tipping when you set it down on a flat surface that is common with many of the other adherent pads. These pets also do a good job of not making the cup so thick that it cannot fit in a standard cupholder in a vehicle. I would definitely recommend these over some of the other styles of pads.

Looking for these simce i make hand made tumblers, the larger one fits most 24oz to 32 oz water bottles and tumblers

I got the black ones. They are thicker and of better quality than I expected. The do stretch to a degree also.If you have a 17oz S’well in your water bottle collection you know there are no silicone boots (only sleeves) that fit them. This was the only compromise I could find. You will find at least one in this set that fits. This could also be used to make the bottom of the 17oz S’well larger so it will fit into a silicone boot.Wish they were closed on the bottom like a boot instead of open.

It has multiple sizes to choose from. My starbucks tumbler fits perfectly.

Buy and waste your money

Good price for these quantities of bottom protectors.

Decent product, both durable and somewhat sleek. The 25oz size was the only one that was useable, I lost that one while camping (must have fallen off).The other 3 sizes were small enough to fit snug around a febreeze can... Although I don’t really think hydro flasks are made that small, I can say 1 out of the 4 sizes worked alright for the price until I had lost it.

Poor quality. Material was so thin that it was deformed in manufacturing or shipping. Could not use . Others in pack were at least useable. I have pictured similar items on Amazon that were better quality. Would not buy again.