Description:Material: ABSSize:Diameter 6.5 cm,maximum stretching diameter 8.5 cmStackable Size fits all cups.Color: red,Blue,BlackSpecifications:Features:1.Allows you to stack various cups together.2.Adjustable and retractable design for a variety of different shapes and sizes.3.Keep your cabinet space clean and tidy.4.Easy to operate, space-saving.5.Can also be used as a tray.How To Use:To use it, just follow these steps:1. Simply place one of it on top of a mug, cup, or glass.2. Next, place a same-sized mug, cup or glass upside-down on top of the stacker.3. Give the stacker a gentle squeeze to adjust the size and your mug, cup, and glasses are safe and soundPackage Included:Cup Stacker*1Notes:1. Due to the light difference, the color may be slightly different.2. Please allow slight differences due to manual measurement.