Century Body Opponent Bag - BOB XLQuick Overview Realistic training for a variety of techniques BOB's longer torso creates more striking surface area for body shot training as well as kicks Features height adjustments from 60 inches to 82 inches tall Polyethylene base fills with sand or water and is rounded for easy roll relocation Get realistic training with BOB, the Body Opponent Bag. BOB XL has a longer torso than the original BOB, giving you more striking surface for body shots