Mizuno Wave Rider 16 Women's Running Shoes SR Touch - A finer density cushioning compound in the heel which absorbs impact stress better than previous technologies. AP+ - Midsole cushioning compound which maintains lightweight effective cushioning through the cycle. Dynamotion Fit - The next generation of design technology to maximize fit and performance. Mizuno 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-eliminating discomfort for a perfect fit. Mizuno Wave - Provides excellent cushioning by dispersing the force of impact across a larger surface area. The stability aspect of Wave technology is gained by the construction differing between the outside (lateral) and the inside (medial) of the shoe, therefore resisting the compression of the midsole in high pressure areas. Mizuno Intercool - An innovative full-length ventilation system which gives the runner outstanding breathability and comfort, keeping your feet dry and cool.