XINGZI | 1Pair Plastic Portable Adjustable Spring Shoe TreesXINGZI 1Pair Plastic Portable Adjustable Spring Shoe Trees 1Pair per order. Materials: Plastic and Stainless Steel. Color: Black. Package: 1Pair. Good plastic and stainless steel materials, sturdy and durable, non toxic and no peculiar smell, rust free and not easy to break. This shoe tree use flexible spring, fit most size of shoes, ergonomic design made the shoe tree close to the shoe cavity tightly, hold the support for the shoes, keep the shoe