Foot Straps secure the BackRx’s elastic leg loops from sliding off the knees when legs are extended, say, for sewing or piano playing. DO NOT use for driving.
Astronaut Marsha Ivins said NASA
uses the BackUp Nada-Chair.
Nada-Chair is used by physicians
for proper posture. - NewsweekApple's Co-Founder Steve Wozniak
bought Nada-Chair productsNada-Chair's products help people
prevent slouching. - Yoga Journal