Mizuno Wave Rider 18 Women's Running Shoes SR Touch - A finer density cushioning compound in the heel absorbs impact stress better than previous technologies. U4iC - A lightweight midsole compound delivers effective cushioning through a format that is 30% lighter than the previous AP+ midsole technology. Dynamotion Fit - Through extensive research, Mizuno have discovered that traditional footwear distorts in the collar and heel during the gait cycle, resulting in heel slippage and a poor fit. This technology relieves the stress the foot naturally places on footwear, thereby eliminating discomfort for a perfect fit. Mizuno Intercool - An innovative, full-length ventilation system delivers outstanding breathability and comfort. Mizuno Wave - Provides cushioning by dispersing impact forces across a larger surface area. Stability is afforded by differing constructions of the lateral and medial sections of the outsole, whereby midsole compression is resisted in high pressure areas, namely, the medial side. This dynamic method of managing overpronation is far less intrusive than traditional medial posts.