Morgan Bulgarian Bag Full Set | 5 SizesMorgan Bulgarian Bag Full Set 5 Sizes The Morgan Bulgarian Bag strengthens and increases the muscular endurance of your grip, wrists, arms, shoulders, back, legs, rotational muscles, core musculature, coordination, balance and overall shoulder and joint mobility. Most, if not all, of the exercises that can be performed with kettlebells, dumbbells or barbells can be performed with the Bulgarian Bag. For example, athletes can use the Bulgarian Bag at