All bracelets close with powerful, therapeutic strength magnetic clasp(s) (they are not stretchy). The bracelets go on easy with one hand and is a natural pain reliever. Perfect for those suffering from Carpal Tunnel, Arthritis, Tennis Elbow and other aches and pains.
Magnetic clasps are 5000 gauss strength each.
How magnets work
Source: Ron Lawrence, MD, President of the North American Academy of Magnetic Therapy and co-author ofMagnetic Therapy - The Pain Cure Alternative. About.com
Magnets are not for everyone!