Innovation: dynamic gel cushioning for maximum cushioning of the heel. Cushioning Gel insoles absorb shocks thanks to the dynamic cushioning gel concept developed by Sidas: a network of gel microbubbles placed in the impact zone is gradually deformed with the impact, thus providing an exceptional dynamic cushion. Anti-bacterial and washable insoles. TECHNICAL FEATURES. Toplayer: Cushioning & antibacterial. Micro-perforations: Breathable. Gel: Cushioning & comfort. Dynamic Gel: Active cushioning. Sole for cushioning impacts. Its micro bubbles Gel provide exceptional dynamic cushioning. The slim fit design allows for low volumes fit. Cushioning Micro-perforation breathable