Massage bolsters are cylindrical pillows that come in different shapes to support the body during massage therapy. These are probably the most widely used additional supports and comforts for the client during various massage positions. Massage bolsters: There can be significant value in using these to add to your massage therapy. They provide clients with additional support and comfort during a massage and may make an overall massage session better. Whether for use as body support pillows, portable massage equipment, or versatile massage tools, there are literally so many types of massage bolsters today for massage therapists and their clients.