Description: Adjustable Height: 4 Layers design, Adjustable Height-Increase(3, 4.5, 6 and 7.5 cm) and air cushion shockproof. Size Fits Most: Cut easily your size with lines indicated at the bottom of insoles. Totally Invisible, wearing them without anybody's notice. Great Material: Mainly made of synthesis elastomeric, super elasticity, shock absorbent. High Quality: Very durable with a long product life They are also used to reduce pressure on the back and knees when walking. This is proven to effectively reduce spinal shrinkage with age. U-shaped Air Cushion: Air cushion protect you knees and ankles, balances foot pressure, suit for standing a long time. Unisex: Height insoles suitable for both men and women. The insoles easily cut the insoles for the adapters inside your shoes. Note: Actual product color may vary from the colour you see on your screen. Specification: Type: Height increase insoles Size: 35 to 45 1 layer heel height: 3cm 2 layers heel height: 4.5cm 3 layers heel height: 6cm 4 layer heel height: 7.5cm Material: Urethane Color: Black Item Weight: 335gm Features: Lightweight Triangular anchor design High quality material Wide compatibility Shock absorption Adjustable height Size fits most - Unisex Easy and durable to use Removable air cushion Free cutting Breathable holes Soft and comfortable Package Content: 1x Pair of height increase insoles