3-IN-1 SIZES: Start on the 16-inch side to get an idea of what your vertical can handle. If (and when) that gets too easy, simply rotate the box, and add 2 to 4-inches, pushing yourself to jump higher and burn those calories!
18in
Blue Streak 18in Replacement Wheelchair Seat – Quick
2.Easy to install, only a Phillips screwdriver is needed to complete the installation.
