Ultimate Performance Gel Insole (small/Medium UK3-8) Ideal for extra cushioning or everyday basic support. The Ultimate Performance Gel Insole can be worn in all kinds of footwear for soft support and pain relief. Featuring gel technology in the heel and forefoot the insole work to attenuates shock impact when striking down helping to protect joints and offering cushion comfort. Thin edges provide a secure fit within the shoe and a smooth, comfortable feel. The bottom of the insole boasts a slip-resistant design that ensures the insole is kept in place whether walking or running for a distraction-free fit.  Specifications: Dimensions: H:36.0 x W:12.0 x D:3.0 cm Guarantee: 1 year Model Number: UP4565SM