Look for a man's coat with a zipper, as shown in the figure below, mainly if the zipper is big enough. Please let me know where you can buy them online and reward them again.
This kind of zipper is generally out of stock and needs to be customized. You can go to some markets that sell bags and accessories, or you can order mantissa as models there. You can buy it at a stall, or you can ask friends who know the clothing and luggage industry to order it at the zipper factory. This should be 10 or 12 injection-molded tooth zipper. The largest tooth commonly used is the No.8 tooth.