Stackable Storage Bins--The top of the drawer has groove design ensures stacking. Use these stackable drawers to save space, which is also keep organized. Pull-out & Install Easily--Built inside sliding rail allows you to open and close these acrylic drawers. Put anti-slip silicone pads on the bottom of the acrylic box to make it more stable and not easy to slide. Just insert the connecting holders into the groove of the bottom plates and install the upper plate. High Quality Acrylic Organizer: These storage bins are made by PET material, which is 12"L x7.5"W x 7"H, and the using size is 11"L x 5.8"W x 6.5"H. It can bear 15lbs when stacked.