The Sof Sole Airr Orthotic Insoles have been designed with a range of features to help improve comfort and reduce pain during movement The following benefits are provided to provide you with reliable comfort and pain relief: Comfort Underfoot: The footbed is constructed from polyurethane for enhanced comfort throughout the day Impact Reduction: SKYDEX air capsules in the heel and the arch of the insoles covert impact into kinetic energy for reduced pain on impact Moisture Wicking: Helping to keep feet feeling fresh all day long, the COOLMAX top cover of the insoles wicks moisture for ongoing freshness Shock Absorption: An encapsulated air chamber in the heel and arch and a polymer gel layer in the forefoot combine to provide shock absorption from heel to toe Stabilising Plate: The reinforced stability plate in the arch and heel enhances motion control and support during movement Option: UK Size 3-5 | EU 36-38, UK Size 6-8 | EU 39-41, UK Size 9-10 | EU 42-44, UK Size 11-12 | EU 45-46