The hot weather field cap is a baseball-style cap made of olive green shade 106 polyester and rayon gabardine cloth, conforming to MIL-C-41820. It was intended for wear as a component of the hot weather field uniform and the OG-107 utility uniform.
The OG-507 hot weather cap is a baseball-style cap, with a visor and stiffner on the inside front, and was intended for wear as a component of the hot weather field uniform and the OG-507 utility uniform.
The hot weather patrol cap is a visor style with a circular crown and air vents. It was intended for wear with the hot weather battle dress uniform.
The hot weather sun hat is a lightweight, soft crowned model with a quilt-stitched brim and chin strap. The hat is lined with self material.
The Enanced Hot Weather Battle Dress Uniform (EHWBDU) is made of 50 percent nylon and 50 percent cotton ripstop poplin instead of 100 percent cotton ripstop poplin of the Hot Weather Battle Dress Uniform (HWBDU).Other changes include fused collar and pocket tabs, removal of bellows on one side of the lower pocket, removal of waist tab, waist suppressed 3 inches, and removal of knee pleats.