Product Description The Traditional Heel is recommended for normal approach conditions providing an average amount of brake.Hammer offers a variety of heel options to help bowlers customize their slide on any approach condition.Adhere the heel to the bottom of the shoe and apply your full body weight to secure it to the shoe. Test the heel on the approach prior to bowling.No trimming necessary, order based on shoe size.Choose your heel size based on these corresponding shoe sizes:Womens: Small = 5.5-8 / Medium = 8.5-11Mens:Small = 4-6.5 / Medium = 7-9.5 / Large = 10-12 / X-Large = 13-15