A distinctive heel GEL unit and iconic midsole shape, which ties back to QUANTUM 360 and also provides all-day comfort and cushioning. Sporty casual upper execution with refined heel detailing for a versatile look that fits into any scenario. ORTHOLITE sockliner for a consistent and cushioned step-in feel. Superior Comfort Designed to protect the foot, and heel in particular, with rearfoot GEL Brand technology to absorb shock before it hits your joints. Durable Upper Quality synthetic materials reduce the potential for irritation and friction while on the move. Smooth Ride Features 90 degrees of GEL BRAND technology and EVA midsole material for a light, bouncy feeling underfoot. Find the Right Fit GEL-QUANTUM 90 GEL-QUANTUM 180 2 MX GEL-QUANTUM 360 4 GEL-QUANTUM 360 KNIT 2 GEL-QUANTUM INFINITY Pronation UNDERPRONATION (Supination) UNDER, NEUTRAL NEUTRAL OVER, NEUTRAL OVERPRONATION How Your Foot Contacts the Ground The outer side of the heel hits the ground at an increased angle with little or no normal pronation, causing a large transmission of shock through the lower leg. The foot lands on outside of the heel, then rolls inward (pronates) to absorb shock and support body weight. The foot lands on outside of heel, then rolls inward (pronates) excessively, transferring weight to inner edge instead of ball of the foot. Push Off The pressure is on smaller toes on outside of foot. There is even distribution from the front of the foot. Big toe and second toe do majority of the work. Foot Type High arches Normal aches Low arches