Royal Posture Support Improve your posture and reduce back and neck strain with this supportive posture corrector. Designed to align your spine and support your lower back, relieving pain and discomfort, while helping you look slimmer. Conducted from a breathable nylon and cotton blend. Great for both men and women. Helps to improve circulation, relieve sore muscles, and reduce neck and back strain. Neoprene/nylon/cotton.Small / Medium (25" - 36" waist).