These are nice electrode pads that are durable and flexible and are excellent for applying around joints , low back etc. Included in this Combo are two Xtra Large Square Pads, great for back application, two rectangulaer pads + Bonus pads (see below)
Massage pads can be used for areas of the body that are flat, like back or thighs. They are great quality and come with a thick layer of non-irritating conductive gel that adheres well to your skin, but leaves no sticky residue when the electrodes are removed.