Magnetic Knee support with closed patella.Some clinical observations indicate that magnetic energy helps:1.improve blood circulation. 2. relax muscles and relieve pain.3. support biological healing.4. improve supply of oxygen and nutrients to muscles and tissues.Made of neoprene with ferrite magnets.Fastened to desired tightness by velcro hook closure.NB The pack photograph shows the support in black but it is actually blue and black.PLEASE VISIT MY SHOP toseea selection ofmy other items.I OFFER A NO QUIBBLE REFUNDGUARANTEE SHOULD YOU BE UNHAPPY WITH ANY PURCHASE. Type Magnets Sub-Type Equipment/ Devices Increase your Sales Abroad with WebInterpret's Global Listing Solution.