GL-271 Cotton Twill Cap This style comes in 44 color combinations. It is a structured 6-panel cap made of cotton twill. It has a pre-curved visor, hook/loop tape closure, and select colors come in youth sizes as well. Mid to Low Crown. 6 Panel. Cotton Twill. Hook/Loop Tape Closure. One Size Fits Most Pre-Curved Visor. Select Youth Colors Available in Youth Section. Structured.