Premium Quality : Each pad is flexible and soft to the touch, helping you get the most from your TENS or EMS unit. They also feature gray cloth backing for durability and come with re-sealable packaging for a longer lifespan. User-friendly Design and Different Sizes: Totally 20 pieces pads,the pads can be used to target different massage locations on the body for a better massage experience. in addition, the elegant curved design provides a better fit for your skin. Perfect for professional and home Use. which provides excellent self-adhesive performance for a maximum of 30 uses. Moreover, those pads are easy to remove with no sticky residue left behind. The electrode pads are compatible with all TENS or EMS devices on the market that use the industry standard 3.5mm snap-on connectors for including: HealthmateForever, HiDow, , , TENKER, , , , NueMedics, TEC.BEAN, , Massage Therapy , , , , IQ Massager, Massage, Medvive, , and many more. Large Pad: 2 inch x4 inch Middle Pad: 1.6 inch x1.8 inch Small Pad: 1.2 inch x1.6 inch . The Unit White Cloth series of Electrode Pads are high quality, TENS Electrodes adhesive for reusability. These TENS Unit Electrodes are professional quality and very popular with health-care practitioners for in-house use with their professional electrotherapy devices. They also make a preferred choice for personal use TENS Unit. These TENS Electrodes offers the highest quality of reusable gel on the market. The reason you need to change your Electrode Pads: Your electrotherapy pads do not stick well and dry after few uses. They leave residues of tens unit electrode pads gel on your body and irritate your skin. color: White Material: non-woven and hydrogel Package Contents: 20 x Electrode Pads Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.