Heavily worn outdoor footwear can quickly become deformed and unusable without a sturdy storage framework that allows shoes and boots to properly dry and quickly aerate after use. Outdoor and hiking footwear often gets wet on the outside (outdoor elements) and inside (sweat) so using an open, durable, waterproof shoe tree is vital to keep shoes clean, dry, and strong. Outdoor footwear also often needs to be washed and cleaned after use and Fresh Flow Shoe Trees are perfect to give the shoe that extra support during and after the washing process. Fresh Flow Shoe Trees’ simple, plastic, open structure provides strong internal support to protect the structure while allowing air to flow through the shoe, stopping bacteria and mold from forming.