This is his older Vest, he's also got a more fitting Avery( brand) one. These are neoprene and can be bought at most Hunting/outdoor stores. Gage runs 97lbs working weight but the issue with the vest is you can't buy them soley on weight... Your dogs build will play a big role in it....Gage runs a 2xl on Avery and 1xl on cabelas brand ( one Seen)