7.5 oz.55 % cotton / 45 % polyester blend.V-neck jacket with side vents.Elastic pull-sting waistband. This top quality 7.5 oz. Tae Kwon Do uniform is made of 55% cotton/45% polyester blend for the best comfort available. The uniform features a v-neck jacket with side vents. The pants feature an elastic pull-string waistband. Both jacket and pants feature reinforced stitching for extra durability. This uniform is perfect for all students looking for a medium weight TKD uniform.