Prospera 2 sets of Refill pads each for PL009EV and PL009B• PR009-p Replacement Refill Pads Fda-approved formula. Each set includes 4 pads, designed for use with the Prospera PL029 and PL009-ev Electronic Pulse Massagers.• PL009B-p Penguin Refill Pads Specifically made for the Prospera PL009B Penguin Electronic Pulse Tens Massager. Each set includes 2 pads.Suitable for application on: neck and shoulders, back, waist, arms and legs, joints, and ankles.