Propper's 50% Nylon / 50% Cotton Sun Hat / Boonie is sewn to military specification MIL-H-44105B and is available only in Army Universal Digital. Item# F550221.

The military fabric approved throughout the Army is the 50/50 Nylon/Cotton Ripstop. This fabric is resistant to shrinking and is vat-dyed to ensure a minimal amount of fading over the life of the garment.

50/50 NYCO includes NIR technology and is approved for Military Operations.