Shoe Rack, Space-Saving 15-Slot Plastic Shoe Storage Organizer UnitMake Full Use of Your Space: Designed to utilize floor space, this shoe rack can be stacked and customized for your space and preference, maximizing every inch of your entryway, living room, closet, attic, space, under the stairs, or a spare corner Unlock Its Potential: Whether you prefer a 4 x 4 storage unit, step shaped shelving, 2 units separated for different purposes, or other shapes to adapt to your space, this shoe rack can be customized within