_Great for high impact activities such as Running, Football and Tennis, the Full Strike Insole is ideal for use where the forefoot and heel are subject to impact shock, such as fast paced aerobic sports and activities. Designed with an anti bacterial coating as well as a 10% lighter design than your existing insole, these are the ideal and low cost way to make your footwear not only more comfortable, but more protective. Simply trim it to fit your shoe, and feel the benefit on the first use. _