SHORDY Menstrual Case Holder for Sterilization, Collapsible Silicone Container - Boil, Sterilize & Store Your Period Cups, Microwave-Friendly & Foldable, Sustainable & Compact, Ideal for Travel

These fit my Shordy brand cups perfectly. Yes, even the large :) I use the boiling water method, and you need to place the cup with the open end up to allow the boiling water to fill the cup as well as hit all of the outside too. Not sure if the ppl complaining maybe don’t get it and are trying to put their cups in open-side-down? Anyways it’s cute and seals nice and collapses great too. You can also use to store or carry your cup in as well. If you’re going to sterilize in the microwave you use it the same way except leave the lid off. Simple and cute, and a perfect fit confirmed if your cups are Shordy brand! (Which by the way are incredible and life-changing! Lol… and no I was in no way paid to say that or asked to say it. I have just been lucky enough to have found the perfect cup for me and could not be happier!)

Super handy, I keep this in my bag when using the cups so I have somewhere to store it before I clean and re insert it. Folds down flat so nice & compact.

Bigger than I expected! Easy to use, just put your cup in there and a little water and put on the lid and sanitizer in the microwave, also when you're doneness, you can use it to store and keep clean and bring with you. Great quality and value for my money. It's even collapsible! I didn't realize that when I bought it!

Tho a little small it met my needs

I used the sterilising cup as directed, the top bursts off and it spills boiling water. I scalded myself and it simply doesn't work as directed. The actual cup i was trying to sterilise is fantastic so it is a pity!