Generous fit and extra-long tails allow for wear over body armor Four-way stretch for mobility Seamless neck, cuffs and body for better fit and superior comfort For superior comfort, the Regulation Base Layer offers strong yet soft cotton that is vat-dyed for consistent color and a true, remarkable fit. These 100% combed cotton jersey knits offer a generous fit with extra-long tails. Additional features include its seamless neck, cuffs and body, coverstitch shoulder and neck seams for added durability and a professional appearance. Shoulders are also reinforced with elastic tape for powerful strength. Body: Pre-shrunk 100% Combed Cotton/Jersey Knit, Neck & Cuffs: 95% Combed Cotton/5% Lycra/Rib Knit | 6.0 oz/sq yd, Machine Washable