These Royal Heritage Cedar Shoe Trees are expertly crafted using 100% natural premium red aromatic cedar wood to protect the leather, fabric, stitching, and soles from moisture damage. They are manufactured to optimize a long lasting cedar aroma and absorb moisture & sweat to prevent natural odors from developing. As a result, shoes are left with a crisp, refreshing scent. Fitting all brand sizes, lengths, and widths, each shoe tree is equipped with an integrated spring coil centerpiece to supply just enough light tension to fill your shoes and maintain the shoe's original length.