Its Function: Shoe tree shaper proctects all your shoes well and prevents creasing.Keep your shoes in good shape and prolong the life of your shoes. Great for shoes storage at home and traveling. Shoe stretcher suitable for tennis shoes, sneakers,bike shoes,running shoes,basketball shoes etc. How to Use: Insert these convenient men plastic shoe shaper into your footwear and supported with flexible spring shafts to preserve the shape and keep your shoes look perfect! An excellent gift for the shoe lover. Adjustable Sizes: Plastic shoe tree men Length: 13" / 33cm, fit men's shoes size from 9-12,suitable for most men. The length can be adjusted freely according to the length of the shoe, which is convenient and practical. High Quality Material: The shoe trees for sneakers are made of sturdy and durable plastic and steel. The surface thickness is about 2mm/ 0.08 inch, which can support the shoe cavity not easy to deform.