Tcamp Ice Mold for Stanley Cup 30-40 oz Tumbler Cup Ice Mold, Silicone Ice Cube Tray With Lid and Bin for Chilling Cocktails, Whiskey, Drinks, Coffee, Easy Fill and Release Ice Maker (Green)

Works well in my Hydroflask cup. Last a long time keeping the liquids cool. A bit difficult to remove the ice rings from the mold. Does do away with the issue of a straw getting obstructed by a clump of ice cubes.

Ice tray works great, the ice lasted all day in my cup.

Cute color, the holder is good quality, the ice try its self is good also. Only issue is getting the ice cubes out due to the cold but that's because its ice! Lol recommendation don't fill them to the top of the center allow some room for movement. Would recommend! I have a 30 oz stanley

Love this i use it everyday

This is really cool and fits perfectly in my stanley and keeps my water ice cold all day but it's extremely hard to remove the cubes and you have to pretty much man handle them lol. It's a struggle. And half the time the ice breaks getting it out...Not sure if it's worth it yet!