Comparison Chart

Category	#1	#2	#3	#4	#5	#6
	Homedics SBM-500H Therapist Select Shiatsu One Massaging Cushion With Heat	HoMedics QRM-400 Quad Roller Massaging Cushion with Traveling Shiatsu Massage	Homedics QRM-400H therapist select quad roller massaging cushion	The Sharper Image MSG-C210	Human Touch HT-1470 Back Massage Pad	Homedics SBM-300H Therapist Select Shiatsu Massaging Cushion
Review
Dimensions Dimensions: Inches
Height	31	27.8	27.6	28.8	45	26.5
Width	18.2	18.5	18.2	18.2	21	19
thickness	6.2	7	6.8	5.2	4	6.1
Weight	~17	~15	13.8	10.5	22	12.6
Main Features
Body Area	Shoulder+Back	Back	Back	Back	Back	Back
Mechanism	Two	One	One	One	One	One
Mechanism Type	4 quad heads	2 Rollers	4 Rollers	4 Rollers	2 quad head	2 Rollers
Massage Styles	Shiatsu	Shiatsu+Rolling	Shiatsu+Rolling	Shiatsu+Rolling	Shiatsu+Rolling	Shiatsu+Rolling
Heat
Preset Programs	6 programs	6 programs	6 programs	6 programs	3 programs	6 programs
Customization Features
Spot Shiatsu Spot Shiatsu: Holds the massage action in the spot you need it
Width Control Width Control: Adjusts the width of the massage rollers to custom fit your body
More Info
Warranty	2 years	2 years	2 years		2 Years	2 Years

Massaging Type

Rolling:

Rolling technique applies constant pressure while rolling gently up and down your back near your spine. Warms and loosens your muscles, preparing your back for a deeper massage. Relieves muscle tension, improves circulation and relaxes the back. This technique is especially useful for relaxing the lower back.

Shiatsu(or kneading):

Shiatsu relieves tension and soreness by lifting and stretching muscles. Improves deeper blood and lymph circulation and helps bring vital nutrients to the spinal area, also helps clear out the toxins from muscle and nerve tissue in the area. Kneads your back in a small, circular motion on both sides of your spine simultaneously.