This is the AB wheel from stamina. It's a simple and effective way to strengthen and sculpt your shoulders, arms back, and abs. As you roll out, you'll see that the seven inch dual wheel design helps keep you stabilized. There's also tread on each wheel so you don't lose your grip. The foam padding on the handles give you a secure, non-slip grip. Learn more about the roller with an expert led instruction video included with purchase for an effective and efficient alternative to sit ups and crunches. The stamina AB wheel is the perfect solution.