Active comfort for active people. Uses: Improves comfort and support with double-gel design. 1. Blue Gel Layer: For comfort and shock protection. 2. Red Gel Layer: For Orthotic support. Twice the comfort with 2-layers of gel! Ultra-Gel Insoles are not only incredibly comfortable but our new double gel design actually returns energy with every step. You ll feel less fatigue and pain no matter what shoes you wear. Orthotic support and enhanced stability. The firmer red gel is designed to support the heel and arch in a stable healthy position. This greatly reduces the possibility of missteps and injury.