Double-knit fabric has a smooth feel Heathered underarm panels give a mixed-fabric look Ribbed varsity collar for classic style Raglan sleeves enable natural range of motion Zippered side pockets Keep it cool with unmistakable Nike style. Made for comfort and style, Nike's Sportswear Advance 15 Jacket is ready to be thrown on at the last minute. A mixed fabric look is made with a soft, double-knit fabric, it features a varsity collar, heathered panels and a storm flap.