Description: The height increasing insole allows the air between insoles and shoes to circulate, helps to draw moisture away from your shoes, and keeps your shoes and feet dry and comfortable. The invisible shoe insole can help increase your height immediately, discretely and comfortably. And it can effectively prevent your foot soles slipping inside your shoes. It is constructed of PVC material. There are 4 styles for you to choose from. It is suitable for sport shoes, casual shoes and work shoes perfectly. Item Name: Shoe Insole Material: PVC Features: Shock Absorbing, Breathable, Abrasion Resistant Size Details: Single Layer, L: 27.8cm/10.94", W: 8.7cm/3.43", H: 3cm/1.18" (Approx.) Dual Layer, L: 27.8cm/10.94", W: 8.7cm/3.43", H: 4.5cm/1.77" (Approx.) Triple Layer, L: 27.8cm/10.94", W: 8.7cm/3.43", H: 6cm/2.36" (Approx.) Four Layer, L: 27.8cm/10.94", W: 8.7cm/3.43", H: 7.5cm/2.95" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 Pair of Shoe Insoles