BOUT BAG - A New Concept in Fitness The first cross-training heavy bag of it's kind allowing the user to perform any full-body workout. It can be used anywhere, by anyone, at any age and workout level. Used by high volume gyms, group classes, personal training and home workouts. Ideal for any type of fitness, HIIT and martial arts (Krav Maga, Boxing, StrikeFit®, MMA, Karate, and Taekwondo) workouts. Bout Bag fuses mobility, stability, durability and function in its base.