ExOfficio Men's BugsAway Talisman Long Sleeve Shirt 60% Cotton, 40% Polyester Imported Back knife pleats for better mobility Insect Shield technology repels mosquitoes, ticks, ants, flies, chiggers and midges Loose fabric weave provides all-over ventilation, Two front drop-in chest pockets, Back knife pleats for better mobility Two front drop-in chest pockets Logo dome snap at bottom of center front placket