Authentic Realtree APX The APX pattern creates a unique confusion in depth perception, giving you an edge in the wild. Lightweight Moisture Wicking, Quick Dry Soft and Durable Printed in authentic Realtree APX, the Men's Essential Camo Long Sleeve Shirt provides the ultimate comfort for your next hunt. The durable, lightweight polyester fabric wicks away moisture to keep you dry and comfortable, making it perfect for hot and humid days or as a layering piece in cooler weather.