The shoe slots are designed to save up to 50% of storage space with their double-layered design, making your shoe closet or wardrobe more organized and tidy. They come equipped with a four-level height adjustment feature, allowing you to adjust the height according to the type of shoe to avoid squeezing or damaging them. Simply place one shoe on the first layer and the other on the second layer to create a tidy and space-saving shoe closet. The package includes 20 plastic shoe slots.