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General advice

Slendertone arm toners are suitable for all adults, but care is still needed. Don’t use our products if:

  • You suffer from a heart problem or have electronic implants (pacemaker or defibrillator, for example).
  • You’re pregnant.
  • You suffer from cancer or epilepsy.
  • You’re under medical supervision for cognitive dysfunction.
  • You are connected to high-frequency surgical equipment.

Question: What does the toning sensation feel like?

Answer: When you increase toning intensity, you feel a mild pulsing sensation followed by a gradual tightening. The muscles should contract smoothly, hold in position for a few seconds and then gently relax again, just like they would during biceps and triceps exercises.

Question: Can electrical muscle stimulation (EMS) cause arm muscle soreness?

Answer: Like all workouts, you should expect some muscle soreness. Use a lower toning intensity if you’re experiencing excessive soreness in your biceps and triceps.

Question: Why is my skin red after a session?

Answer: Some redness is natural and fades soon after toning. If the redness is excessive simply lower the intensity. If the problem persists, get in touch with our customer care unit.

Question: Toning is slightly uncomfortable. How can I boost my comfort levels?

Answer: Ensure that the gel pads are correctly positioned and firmly compressed on your skin. Pause the workout before making your adjustments. Check the intensity level too; turn it down and slowly increase the intensity throughout your training program.

Question: How do I know when the gel pads need replacing?

Answer: First, adjust your toners to ensure correct, firm positioning. If the signal is still weak (even if your batteries are charged), it usually means that the pads’ adhesive properties are starting to wear. We recommend replacing these after 20-30 Slendertone sessions.

Shop gel pads now

Question: Why won't my gel pads stick, even though they’re fairly new?

Answer: Ensure that the patterned grid-side is placed over the studs (the black side should be on the skin) and that you’ve removed their plastic covers. Before and after sessions, press the edges of each pad onto your arm toning garments to help minimize this in the future.

Question: What’s the difference between Slendertone and other muscle toners?

Answer: Our EMS technology and designs are clinically proven, patented and completely exclusive.

Question: Can I use Slendertone Arms after having a baby?

Answer: Yes, but seek approval from your doctor first.

Question: Can I use my Slendertone Arms during regular exercise?

Answer: Combining arms toning with regular exercise can deliver better results, because the muscles are working harder. Bodyweight exercises and light workouts are recommended. Make sure that you use an intensity slightly lower than what you usually use.

Question: What is the warranty period on my Slendertone Arms?

Answer: Slendertone Arms comes with a two-year warranty on electronic parts. If a fault develops, view our troubleshooting section or please get in touch with customer care.

Getting started

Question: How long does it take to charge the battery?

Answer: The controller should have enough power for one session but we recommend fully charging the battery before toning. This takes a minimum of 3 hours and should last for at least 5 sessions. If your battery gets low, the icon flashes.

Question: What do I need to work Slendertone Arms?

Answer: You need the toning armbands, handheld controller and charger, and one set of gel pads.

Setting up your arm toners

Question: How do I assemble my right and left arm toners correctly?

Answer: Follow these simple steps to start your arm toning journey:

1. Lay your arm toners on a flat surface so that the square markings and metal studs are facing you.

2. Take the four pads out. On one side there is a grid pattern, while the other is plain black.

3. Remove the plastic covers from the patterned side and place the pads face down, completely covering the metal studs.

4. Take the covers off of the black side of the pads to expose their adhesive gel. Save these to protect your gel pads after each arms toning session.

5. Position the right arm wing (R) around the tricep with the widest part nearest your elbow. Wrap the smaller oval section around the outside of your arm to the front and fasten the straps tightly. Repeat with the left arm (L).

6. ‘Click’ the controller into place, but don’t force it in. Ensure that the pin connector is the right way around first.

Question: What happens if the pads aren’t placed grid-side down onto the studs?

Answer: The grid side distributes the EMS signals from the studs evenly and effectively. If this is done incorrectly, it triggers less effective EMS signal delivery and less comfort toning on higher intensities.

Question: What happens if I don’t take the protective plastic covers off the pads?

Answer: The pads send EMS signals to the muscles using a water-based, adhesive gel, so it’s essential to remove the cover for the product to function. Keep these covers handy to protect your pads after toning sessions.

Question: Can I move the arm toners up or down?

Answer. Yes, but ensure that the controller is not connected and the gel pads are unstuck from your skin before making any adjustments.

Question: What if I put the left/right toners on the wrong arms?

Answer: Correct placement ensures that you’re targeting the muscles effectively. Misplacement can also potentially cause discomfort.


Question: I’m ready to tone! How do I control my Slendertone Arms trainer?

Answer: After setting up your toners, press and hold the power button for 2 seconds to turn on your controller. With both thumbs, press the intensity arrows up to increase intensity levels and down to decrease.

This automatically begins the timer for the toning program. Pause this at any time by pressing the power button. To resume/stop toning, press it again, or hold down the button to switch off entirely.

We advise toning when seated until you get used to the sensation of the EMS contractions – it won’t take you long.

Question: What toning programs does Slendertone Arms feature?

Answer: Arms includes 3 toning programs which can be used with or without exercise and triceps and biceps workouts. Press the ‘P’ button to display these training programs. You cannot change programs during a session. First, you need to switch off the controller and then switch it on again.

Slendertone Arms also features ‘auto-progression’, which takes you through a clinically proven set of toning program parameters for even better results. Auto-progress begins at program 1. Simply follow the sessions as prompted on the screen.

Question: How can I increase the intensity?

Answer: With both thumbs, press the up arrows to increase and down arrows to decrease. Select an intensity level which is comfortable but still challenging, increasing as you progress through your six-week training plan.

Question: What training intensity should I choose?

Answer: Everyone has their own personal preferences, so it’s impossible to recommend your perfect starting point is. It should be comfortable but challenging and gradually increased during each toning session. The table below illustrates how you could increase the intensity over a six-week toning plan. Set your own training targets and see how you do. You can always make adjustments along the way.

Question: How many sessions can I do in a single day?

Answer: We recommend 2 sessions per day maximum, but don’t forget to rest and recover if you experience muscle soreness. It’s during these recovery periods that your muscles build up strength.

Question: How many sessions can I do in one week?

Answer: Try to complete at least 5 toning sessions per week, depending on your lifestyle or schedule and how much recovery your muscles require.

Question: Where can I view my toning progress?

Answer: The controller stores total training sessions and your maximum, average and current toning intensities. To view this information, press the ‘i’ button. This appears then reverts back to the timer after a few seconds.

Question: How do I change my toning program?

Answer: You can swap programs whenever you like, but you will be starting all over again. You do not lose overall session history, but you do have to restart from program 1. Press the ‘P’ button at any time to change toning programs.

Question: What if my battery dies during a session?

Answer: Recharge the controller. Try to recharge your battery when there is 33% power remaining.

Question: Why am I getting an ‘ERR’ error message on my screen?

Answer: Check out our troubleshooting section below for the possible reasons and solutions.

Wear and care

From perfect pad positioning to correctly cleaning your toner, we have all the tips and guidance you need.