Rapid Waves Compression Caps are made with Premium Quality Materials, it is designed for comfort and durability. The stitching is on the outside of these caps similar to a Durag to ensure a flawless Wave pattern without leaving a line in the middle of your Waves. These caps help with extra compression best used on top of your Crown Patch & Durag for extra compression to lay your Waves down expecially when Wolfing. Rapid Waves Compression Caps are lightweight to ensure breathability.