Large Ice Cube Mold for 40 30 20 oz Stanley Tumbler Cup Accessories, BPA Free Green Silicone Freezer Ice Ring Tray With Lid for Drink Coffee Juice Whiskey Cocktail,With Stainless Steel Tray

I brought this for my daughters water bottle ,to keep cool all day at school. They are easy to remove and use . Her water bottle is a 30 oz and we put 3 in her bottle in the morning and it's still there when she gets home from school . My daughter loves these for her water bottle ( and it's not a Stanley water bottle but another brand ,and it fits great ). The price was great and we use them daily ,for her water bottle .

This silicone ice tray is perfect. The ice comes out easily and the silicone is sturdy. The metal tray it comes with it is such a great idea. I use it in a non-name brand cup and the sizes of the ice fits nicely. No leaks in the silicone and the ice completely freezes.

They fit my cup perfectly and the tray was a very nice addition. My only issue was that it was difficult to get the ice out without struggling.

awesome invention. super easy to clean and remove the ice. made with a thick material, will not rip easily.

4 ring sizes for 44oz tumblr, 3 for 30oz.30z rings fit well in my Stanley tumbler.Includes tray.Material is thin but serves purpose.Bit of a pain to push ice rings out.Thick ice pieces keep drink colder for longer.Mold is awkwardly shaped and takes up excessive room in freezer; could have been designed with space saving in mind.No longer need to stab the ice until my straw fits!Overall happy with my purchase.

I'm not sure if these work any better than regular ice cubes at keeping my drink cold but it does make it easy to insert the straw.

I didn’t think I needed ice molds—until I got these! They’re super easy to use and make perfectly shaped ice every time. I’ve used them for cocktails, iced coffee, and even to freeze herbs in olive oil for cooking. The ice pops right out without cracking or sticking, and the silicone is easy to clean and doesn’t hold any weird freezer smells.

They are large, like they say, but if your cup is not large or not the exact size they would not fit. I have to meld it a little just so it will fit in the cup and it's a thirty two ounce, so I don't know how I will fit in a forty ounce, but it does not fit for thirty two i also, guess is the way to shape of your cup. As well, so you need to find that out.