Review on 🥊 MaxxMMA Advanced Cobra Reflex Bag Kit 2.0: Improve Speed, Precision, and Reflexes with this Elite Training System by Tim Wheeler

Lots of feedback because the base isn't standing still. The problem is that you use water! Sand is required as a base and weighting agent. Highly recommended. I used Lowes Play Sand. $5 per bag. I bought two. One more thing - the instructions for setting the speed are a bit tricky. Speed 1 and 2 are two different bags. The large bag is speed 1 and the small bag is speed 2. Other speeds require you to place the adjuster inside the spring (BLACK PAD). Then the big pocket is 3 and the small pocket is 4. I hope this helps. I love the bag, honestly everything I expected. I hate it when a rating is bad due to user error. I would recommend it to all my family!