Enhance you kick drum's tone, with an AF Patch single-beater kick drum patch by Evans. The Evans AF Patch is made from a Kevlar and polyester lamination, offering you extreme durability. At the same time, it's flexible stress-relief design adds thickness to your kick drum's head, without choking off its sustain or impeding its natural motion. It's amazing how the ultra-low-tech AF Patch can take a flabby kick drum sound and give it the punch it needs to carry rock, metal, and other uptempo-style beats.