Fangrui Product Details Easy And Stable Stacking For Space-saving: Our Shoe Boxes A Convenient Slot Lock Design That Allows For Effortless Stacking. Simply Ppinsert-and-push To Securely Stack The Boxes Together. This Innovative Design Ensures Stability, Enabling Free Combinations Of Boxes While Making Them Easy To Move. Sturdy And Ventilated Design: The Shoe Box Lids Are Made Of Pp Material, Providing Excellent Stability Once Assembled. Additionally, The Rear Ventilation Holes Promote Air Circulation And Prevent Unpleasant Odors From Accumulating. Simple Assembly And Space-saving Stackability: With Our 2-pack Shoe Box Set, Assembly And Stacking Are A Breeze. The Boxes Securely Stack Together Using Connecting Points, Saving You Valuable Space. When Not In Use, Disassembling The Boxes Requires Just Two Easy Steps. Easy Access And Time-saving: The Clear Front Lid Of Each Shoe Organizer Allows For Effortless Visibility And Quick Access To Your Shoes. Simply Open The Lid, And You Can Easily Retrieve The Pair You Desire, Savi