The GoFit Weighted Vest is perfect for adding resistance to your workout whether it be for aerobics, football or training for the Fireman's Academy. The weighted vest is adjustable in weight (Each weight packet weighs approx .75 lbs) The vest fits both men and women with it's unique one size fits all double closure design. Granulated Steel Shot Packets conform to the body and the vest features neoprene padding for total body comfort. Adjustable in weight from approx .75lbs to 20 lb. One size fits all.