The interfaces on the suit, including the zipper, cuffs, and the edge of the hood or collar, are made liquid-tight to prevent leakage. Cuffs, hood and collar interfaces can be elastic or liquid-tight seals. In addition, the zipper area can have fabric flaps that cover them or be specially made as liquid-tight zipper assemblies.
The sewing of coveralls can be the most difficult part to get right. Seams are sealed by putting tape on them for protection strengthen purposes. However, places, where multiple seams join (such as the armpit), can be difficult to seal properly. Jinhong, in another hand, has been manufacturing coverall for years, we make sure that healthcare workers can have the best protection in the market.