REVOLUTIONARY DESIGN - The teardrop shape and water-filled interior absorbs the impact of each strike, giving you an intense workout and overall enhanced training session. You'll never want to pound sand again! EXCLUSIVE BAG COLORS - Aqua Training Bags come in a variety of eye-catching colors. Each bag is individually hand-swirled and produced with its own unique swirl pattern, so no two bags are ever exactly alike. BUILT TO LAST - Made in the USA with thick-walled vinyl and injection-molded ends.