Eighteen inches across and 23 in tall, this water bag keeps a small footprint, and its filled weight can be set anywhere up to 110 lbs by adding or removing water. That range lets a beginner start light and build up without buying a second bag. Thickened PVC absorbs hard shots and spreads the force across the surface, so the feel is closer to hitting a padded opponent than a solid block. Empty it holds 11 lbs and packs flat into a gym bag or a cupboard, which suits a spare room that has other uses. A 39 in hanging chain and a 39 in filling hose come with it, and quiet operation keeps the rest of the household on side.