Good Material: Our Comfort Insoles made of Durable and soft PPC. Featured air cushion function, makes them comfortable to wear. One siez fit on UK Men and women's size 4-9.5. adjustable Heel-- 3cm 5cm and 7cm depending on shoe type. and this style Insoles allowing you to easily cut out the size you need. These height increase insoles will increase your height by up to 7cm or 2.8" instantly and secretly. Insert into any of your existing sports, formal or casual shoes and look taller. Increase Height : Brings you invisible heightening, which is the simplest and most effective way to increase leg length. These are specially designed to wrap around the shape of your foot heel and arch making them incredibly comfortable. Air cushion Design : The surface of the insole is made of breathable fabric. Breathable and sweat-absorbing when you dress up. Suitable for any adults and any occasion.