Adjustable height: simple, adjustable design lets you change the riser height to match different shoe sizes so boots, sneakers, heels, and slippers sit neatly and accessibly. Spacesaving shoe organizer: doubles shoe capacity in wardrobes, closets, and shoe cabinets by creating stacked storage; reduces clutter and makes better use of existing space. Stable, antislip base: builtin antislip design on the bottom keeps the stacker secure on floors or inside cabinets so shoes stay in place. Versatile placement: use on the closet floor, inside a shoe cabinet, or on open shelving in the entryway or living room; works wherever you need extra shoe organization. Protects and organizes: holds pairs upright and separated to prevent scuffs and crushing, keeping shoes easy to find and ready to wear. Easy to use: quick to adjust and place — no tools required — so you can rearrange as your shoe collection changes. Typical use scenarios: Closet or wardrobe: install multiple risers in a shoe cabinet or closet shelf to double storage capacity for everyday shoes and seasonal pairs. Entryway or living room: place on the floor or a low shelf to keep frequently worn shoes and slippers organized and prevent a messy doorway. Travel or temporary storage: use adjustable risers when rearranging shoes between rooms or when storing offseason footwear to maintain and protection. Functionality summary: Adjustable shoe risers/stackers with an antislip bottom that increase space utilization in wardrobes, closets, and shoe cabinets while keeping shoes neatly arranged and protected. Designed to meet daily shoe storage needs with simple, stable operation.