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Infinity IT-8500 Zero Gravity Massage Chair

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Infinity IT-8500 Massage Chair - Best Seller!

IT-8500 User Manual [pdf] | IT-8500 Quick Start Guide [pdf] | IT-8500 Assembly Guide [pdf]

The Infinity IT-8500 is easily one of our best selling massage chairs. After you take a closer look at the features its pretty easy to see why, control over your massage is placed in your hands with one of the most comprehensive massage adjustment systems you are going to come across in any massage chair. The easy to use remote of this massage chair makes your experience as simple as the press of a button to get your massage started, and gives you the options of changing almost everything with your massage. Check out the features below and see if the IT-8500 is the massage chair for you.

Body Scanning Technology

This feature is the basis of any truly customized massage and has become a staple of modern massage chairs. When you first start a massage program the rollers will glide up your spine and map your unique height and shape. This scales the pre-programmed massage routines to your specific body shape, which guarantees a customized massage with every use.

Zero Gravity

You don’t have a modern massage chair without Zero Gravity capabilities. This position reclines you back and raises your legs relieving your joints from gravity’s influence. This allows your joints to decompress which helps relax the surrounding muscles, which can sometimes induce a sort of weightless feeling in some users. Another important benefit is that this position focuses your body weight on the backrest of the massage chair, there by improving the deep tissues massage you receive from the back massage rollers without the massage chair having to work any harder.

S-Shaped Massage Track

The massage track of the IT-8500 is designed to more accurately mimic the human spine. This is a great improvement over the old straight massage tracks and allows for a much more uniform massage across your whole back especially in areas that a straight track would miss, like your lower back and upper shoulder area.

Built in Sound System and MP3 Player Support

Connect your favorite MP3 player and receive your massage while listing to your favorite playlist. The built in speakers project the sound into the chair instead of out into the room, so your music is focused on you and your customized world or relaxation.

Easy to Use Remote

The remote keeps easy control over every aspect of your massage within arms reach and changeable at the push of a button. Easily turn on the lumbar heating, recline into the zero gravity position or turn the foot rollers on or off at the simple push of a button. This is where all of your fine adjustments to your massage are as well. Change everything form the width, speed, intensity and strength!

Available Massage Techniques

  • Kneading
  • Tapping
  • Knocking
  • Shiatsu
  • Combination

4 Pre-set Massage Programs

  • Refresh
  • Relax
  • Extend
  • Recover

Fine Manual Adjustments to your Massage

Use the intuitive display to adjust the speed, width, or strength of your back massage, as well as the intensity of the airbag massage to your liking. Everyone has different preferences for their massage experience. With this massage chair you are sure to be able to meet every one of them.

Spinal Correction Feature

One thing that Infinite Therapeutics is known for is there Inversion Therapy technology. This technology allows the massage chair to intuitively recline and use airbags to stretch the spine and the muscles surrounding it. This acts like a sort of deep tissue massage accessing muscles that most massage chairs don’t even know are there.

Tru-Grip V Stretch Program

By inflating specific airbags and positioning your body in a specific way the V Stretch Program allows for a spinal stretch that you have never experienced before. This is one feature you will not find with any other type of massage chair.

Full Body Airbag Massage System

An elaborate airbag massage system has been incorporated throughout the chair to provide a compression massage to your limbs that increases circulation, and helps relax those often used muscles. This system is also one of the integral pieces to any of the stretching or inversion therapy programs.

Airbags are located all over the massage chair, including:

  • Head Rest Pillow
  • Lower Waist
  • Lumbar and Seat
  • Foot Area and Legs
  • Shoulders
  • Arms and Wrists

Accu-roll Shoulder Massage Technology

This technology uses sensors to more accurately map the shape of your shoulders so that your shoulder massage is not only accurate, but uniform as well. As long as you are within the recommended user height, this massage chair can provide you with an impressive shoulder massage.

Lumbar Heat Therapy

Two large heating pads are placed in the backrest of the massage chair by the lumbar to apply heat therapy to those often tense muscles and to help loosen up the large muscle groups in your back. This is a great way to improve your back massage as a whole instead of just the lower back massage.

Low Energy Consumption

The Infinity IT-8500 massage chair actively works to minimize its impact on energy consumption as well as the environment. Using only about 200W while operating the chair works to keep a minimal footprint by being more energy efficient.

Quiet Massage Machinery

This massage chair is much more acoustically sound than many massage chairs on the market. Designed to be quiet you can focus on your massage experience, and music instead of listening to the sounds of the moving parts that are massaging you.


Other Details

Suggested User Height:
Recommended Max User Weight:
325 lbs
Roller Stroke Length:
Chair Weight:
229 lbs
# of Motors:
# of Airbags:
Timer Specifications:
10/20/30/45 minutes
Synthetic Leather
Dimensions (upright):
59" L x 36" W x 46" H
Dimensions (reclined):
74" L x 36" W x 37" H
Removable Color Display remote
Made In:
Requires Assembly:
Shipping Dimensions:
3 Boxes - 63" L x 33" W x 31" H | 2nd Box: 21" L x 23" W x 19" H | 3rd Box: 18"L x 38"W x 16" H
Shipping Weight:
Total - 342 lbs
Power Consumption:
Power Supply:
AC 100V-240V 50/60 Hz

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  1. IT-8500 User Review

    Posted by on



    Like most consumers, massage chairs of this caliber isn't sold in my area. Researching the chairs online was my only option.


    Shipped from Tennessee to my location, Panama City, FL. ---- Ordered Wed, received Tuesday.


    It's very heavy!! I'm not sure why they put wheels on the back of the chair, especially when you will likely hurt your back trying to lift the front of the chair in order to use the wheels to move it.


    The chair sits on 4, 2X3 inch rubber feet. Save your back, put furniture sliders under the chair's feet prior to assembling the chair. Adding the sliders enables me to easily move the chair where I want it.


    Before repositioning the chair back, make sure the loose air tubes are clear from pinching. Facing the chair, look where the seat and back intersect : 3 tubes on the left and 1 tube + 1 speaker on the right.


    Watch YouTube Videos on assembling the IT-8200. The chair comes with a long Philips head screw driver and an Allen wrench. In addition you will need a very, very short Philips head screw driver. The short screw driver will be used on the back 2 locking inserts for the arms. The front locking arm insert and the shoulder airbag/speaker sections require the long Philips head.

    Foot/Calf Section:

    If you assemble this section by yourself as I did, the foot/calf section will need to be place on a 2X4 or something comparable in order to align the mounting points between the chair and the foot/calf section. You can't simultaneously hold this section up and screw in the hex head bolts.

    Head/neck airbag:

    When you install the back pad section (contains head/neck and lower back airbags) you may need to tug on the air tubes in order to get the head/neck airbag into position. In all of the videos I looked at online, the bottom of the airbag sits just above the shoulder airbags. That position doesn't fit me or my wife correctly. It becomes very obvious when using the relax program.

    You can gently pull the head/neck air tubes through the back section which allows the head/neck airbag to drop down, lining its bottom up with the shoulder airbags bottom. This makes a world of difference in the neck massage using the relax program.

    Use the head/neck Velcro attaching point as a reference. You should be able to pull out the air tubes to the point where you are still able to attach the airbag to the Velcro and have a 1/2 - 1" of play in the tubes.


    The preset programs relax, extend.... scans your back to determine your height. The manual modes don't do this. From my research I noticed website adds referencing optical scanning for this chair. As an electrical engineer I don't any optical sensors.

    What actually happens when the chair scans your back?

    Basically, the massage rollers runs up your back until the pressure against the rollers is reduced. The reduced pressure position, generally your neck area, is used as a reference point for your massage.

    Neck and Shoulder:

    I like a good neck and shoulder massage. After extending the head/neck air tubes I get a nice squeeze on my neck. Before the air tube adjustment, it didn't.

    When using the other programs I would suggest moving the head/neck airbag out of the way and locking it in place. By doing this, the scan seems to be more accurate on your neck location.

    Note: If you don't lock or tie down the head/neck airbag, especially on the extend program, it will pull the shoulder/head pad off the back of the chair. Without the pad in place, the head (base of scull) massage is rough.

    Shoulder Blade and Upper tail/hip bone areas may need extra padding if you lack any natural padding in these areas. Massage rollers hitting bone doesn't feel that good.


    Years ago I tried a massage chair that squeezed my calves to a painful point. The calf massage on the IT-8500 is tight, but comfortable. The foot tendon airbag feels very nice, wish I could get more massage in that area.

    The 1st time I tried the foot rollers they felt good most of the time, however they did put me on edge a few times. Since, I didn't want to turn off the rollers, and didn't want my massage to be interrupted by pain in my foot, I placed carpet on the rollers (carpet side facing the rollers) to reduce the intensity.

    My main issue is the roller intensity in the arch of my foot. I would like more roller intensity in the heel and toe. Cutting out some of the carpet may solve this issue.


    This is nice. I would like more intensity on the hand and finger areas, more on the order of someone massaging each individual finger. When I get a chance I want to make a bean bag which I can lay my hand on. The combination of bean bag and airbag may get more of the massage I'm looking for in this area.

    At home, I work a lot with my hands and depending on what I'm doing, my hands get pretty sore at times.

    Extend Program:

    This is my favorite. Other than issues mentioned earlier, I really like this one. On the other hand, my wife and daughters enjoy the stretch, but not the pulsing or vibrating part of the program. It would be nice if you could select another massage technique when the pulsing starts. I saw a review were the reviewer indicated you could do that, but every time I try it goes into manual mode which dis-engages the extend programs routine.

    I'm not sure if I can manually simulate the extend program. When I get a chance I will look in to it.

    Manual Modes:

    By default the full zone massage is engaged when the manual mode is used. Without the scan reference point the rollers will run the complete length of the roller track, which may position the roller on the top of your scull, depending on your height.

    What I discovered, which is not in the users manual or any videos that I could find, is that you can set your own reference point for your height.

    How to set your reference point:

    1. Select a function while in the manual mode

    2. Push the "Zone" button to select the "point mode massage".

    3. Use the "Roller Adjust" buttons to position the top set of rollers just above your shoulders, this is your reference point.

    4. Quickly push the "Zone" button once to select the "Full mode massage" for a full back massage or twice to select "Partial mode massage" to get a neck/shoulder massage.


    In my 3 year search for an upgrade to my IJOY massage chair, I purchased the IT-8500 and have been using it for the past 5 days. The chair's price, and by nature, I don't buy before I try, kept me from buying. My wife, who has back issues due to car wrecks and degenerative disc, would not use my IJOY chair unless she was desperate. The chair didn't fit her right and the massage is intense.

    The expectations of the extend program and neck massage pushed me into taking the IT-8500 plunge. My hope is that my wife will use the chair on a regular basis to alleviate some of her back issues. As for myself, other than issues mentioned, I'm happy with the chair.

    If interested, we purchased the chocolate brown, which is very good looking rich brown. The internet pictures don't give it justice. It looks a little darker in person.

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