These three Styles have patent pending and used for multifunctional medical uses. Red T-shirt has snaps across either left or right shoulder and sleeve. Originally used for rotator cuff tear, shoulder replacement to replace the hospital gown. All our t-shirts are 100% Cotton, Ultra Heavy Wt., 6.0, the heaviest t-shirt available. All our t-shirts have been tested for more than 8 continuous months of wear. Kelly Green t-shirt is another variation of Orthopedic t-shirt and can be used for abdominal surgeries, mastectomy surgery, strokes, Parkinson, Dementia, Alzheimers, and the Royal Blue t-shirts when unsnapped is like dressing with a robe. 2" snaps provide privacy, comfort, and use Style #1 and Style #2 combination for easy access on/off. It is amazing what a T-Shirt can become by adding snaps. WE SUGGEST TO ORDER MORE THAN ONE FOR A SPARE CLEAN ONE. ALWAYS ORDER A SIZE LARGER THAN NORMAL. SUGGEST TO DRY IN DRYER A FEW MINUTES AND FINISH HANGING.