There are 2 main types of wheelchair seat belts: lap belts and shoulder belts. Lap belts are created to suit over the user's lap and buckle securely. The great thing about four-stage harnesses is they give the two lower and higher system balance and stop ahead sliding, tipping, or leaning. https://types-of-automotive-hose62835.acidblog.net/58312623/about-types-of-wheelchair-seat-belts