Cotton-blend and a Flexfit band make this ball cap cool and comfortable. Standard crown fit Flexfit® fitted cap Uses: Trail Imported 98% Cotton, 2% Elastane [tabs][tab title="Size Chart"] Columbia - Hat Size Chart Hat Size Head Size S/M 6 5/8-7" 21-22" L/XL 7-7 3/4" 22-24.25" Adjustable One Size 6 5/8-7 3/4" 21.25-24.5 Columbia - Mesh™ Tree Flag Ball Cap - High Crown