Class B Uniform or duty Pants are sharp, clean, and efficient, 5.11 Class B Uniforms professional excellence and outstanding performance. Options could include a more casual relaxed fit. Available in a variety of blends and fabrics, tailored specifically for the demands and uniform requirements of your job. They are made from comparatively less-expensive, lighter-weight fabrics like polyester or polyester blends which hold their shape and last long. When you require it "Only the best for those who require the best".