Tru-Spec Hot Weather Scorpion OCP Army Combat Uniform Shirt 1833. The TRU-SPEC Hot Weather Scorpion OCP Combat Uniform is designed to allow the wearer a cooler uniform in extremely hot environments. Designed to be cooler and breathe better than the standard-issue combat uniform. Constructed from CORDURA® NYCO Extreme Rip-Stop that is 17% lighter while displaying 3x higher tearing strength, 10x the breathability and drying 35% faster than US Mil-Spec MIL-DTL-44436B NYCO fabric. Uniforms in the fabric are currently selected and fielded as the US Army Improved Hot Weather Combat Uniform.