The BioEssence Energy Collar is an innovative way to provide sustained therapy with the energy packets on pets. They have proven to be very effective with health conditions such as arthritis, degenerative myelopathy, seizure disorders, and certain temperament and behavior disorders. The collars are made from durable nylon with a Velcro lining allowing for the attachment of two BioEssence Energy Packets on the inside of each collar. Packets can be easily removed for cleaning. Dog collars are available in sizes 10 to 26, and cat collars are available in size 10 nylon mesh for easy adjustment and perfect fit.