Train and develop core muscles while enhancing coordination with the Century® Wavemaster® 270 lb. Vinyl Training Bag. With a super-tough vinyl cover for durability, the bag has high-density foam that absorbs high-impact hits, making it ideal for all martial arts workouts and kickboxing. The round base can be filled with sand or water and rolls for easy relocation. 8 height adjustments from 47" to 68". Red.