1 option for towel storage under the sink would be to install shelves or drawers. Depending on the offered space, you'll be able to spot freestanding shelves or go for built-in shelving or drawers that match the cabinet dimensions. We appreciate how Within this space the backs with the shelves https://flenzy.store/elegant-white-6-tier-over-the-toilet-storage-cabinet-with-sliding-barn-door/