BetterBack, founded by Katherine Krug, is a portable posture-correction device featured on Shark Tank (Season 7) that helps users sit with proper, upright posture to alleviate back pain. By bracing the lower back and securing around the knees, it acts as a portable ergonomic support. Function: It is designed to be worn for 15 minutes a day to retrain posture, or while sitting for long periods.Portability: The device folds into a small, portable package.Versatility: It can be used on any chair, including in offices, airplanes, or during travel.