A fluid-filled bladder with a reinforcing structure and a method of manufacturing the bladder and reinforcing structure are disclosed. In general, the reinforcing structure extends around the bladder, and the reinforcing structure is bonded to an exterior of the bladder. In some embodiments, the reinforcing structure is recessed into the bladder and extends along side surfaces of the bladder and between upper and lower surfaces of bladder. In manufacturing, the reinforcing structure may be located within a mold, and the polymer material forming the bladder may be bonded to the reinforcing structure during the molding process.