About this item

• Keep Cold for 5 Hours: this ice cube mold keeps your drink for 4-5 hours, compatible with Stanley 40oz, 30oz and 20oz tumbler and most of others tumbler cup, also comes with 4 straws in the set
• Food-Grade Ice Cube Tray: made of food-grade silicone, BPA-free, flexible and elastic, reusable. (Notice: for 20oz and 30 oz. Stanley Tumbler, only the small and medium ice cubes can be placed in.)
• No obstruction of Straw Movement: special design, you can use the straw smoothly even when the ice is put into the stanley tumbler
• Ice Mold with Bin: helps you hold the mold more steadily, less likely to get squeezed then tipped over when you put the ice mold inside the refrigerator
• Notice: Be sure to place the ice cubes in the order of 1st-2nd-3rd (as indicated by the numbers on top of the mold). For 30oz tumbler, you can only put two ice cubes (small and medium)