The Lomond boot is part of the Grisport Active Air range which has really taken off over the last two years. Customers constantly tell us that the Active Air shoes range are the most comfortable shoes they have ever bought - try them and find out why. We are convinced these shoes are the most comfortable you will ever buy. The Comfort Sole is the engine room of these shoes; it is made up of 6 layers: Punched Leather Insole Activated anti-bacterial carbon layer Ultra-light shock absorbing stabilizer Rubber shock absorbing 'Springs' Middle sole made with micro air-bubbles,  Anti-Static and non-slip rubber outsole.