With the set TUBE set, you strengthen and tone your upper and lower body with exercises such as bicep curls and squat presses. The set includes 3 interchangeable resistance levels: 2 foam-grip handles to change the resistance and load in a snap, a door anchor that attaches to nearly any door, a training manual, and online access to our training platform. TUBES expand the capabilities of your home gym and are desirable for those who feel handles would be more comfortable.