Manufactured from heavier superior shrink-proofed dye-fast fabric to withstand the severe tests of industrial use and harsh commercial laundering. Premium quality 270gsm - polyester/cotton zip front. Heavy-duty rustproof metal zip. Flap to conceal and protect zip. Elastic back for comfort. Twin stitched front and back rise (crotch). Stress points have been bartacked. Twin stitched pockets.