This vest top is what is used to make our wader. Seamlessly molded from 100% natural rubber and chlorinated inside and out for a super smooth none stick surface. Use this vest with your current Hydroglove suit trouser and it helps keep the seal tight around your chest. Or use it with your full suit for wear protection from harness type equipment. Select the size based on the suit you are using. All vests are about 22" tall and .020" average thickness.