Propper OCP 50/50 Boonie Sun Hat, Adjustable Chin Strap, Meets MIL-H-44105B Military Specification, Vent Holes, Nylon and Cotton Ripstop;

Protect yourself from the elements with a Proper boonies. Sewn to military specification MIL-H-44105B, the boonies hat includes vent holes on either side to allow for air circulation. Use the adjustable chin strap for a secure fit.