Abdominal and Core Trainer Mat For Lower Back Support , With Video Links and Bonus 4K eBook

$49.99 (as of May 22, 2019, 7:12 pm) & FREE Shipping. Details $16.99

Provides full range of motion for training obliques and ab muscles , doing crunches and sit-ups
Removes strain and stress from your lower back and maximizes the effectiveness of every sit up , crunch , and six inchers on your abs
Ergonomically designed to mimic the curve of your lumbar so that you get a full extension on the way down and utilize your full range of contraction on the way up

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