These cuffs are perfect for healing both your physical and the spiritual bodies. 
Copper has been worn for its healing benefits since forever. 
Wearing copper can increase weight loss, reduce arthritic pain and improve circulation. 
Copper has high vibrational energy. Spiritually it  is worn to repel negative energies and allows you to easily conduct and regulate the positive energies you need. 
Oh and yes, they are adjustable!