Original BackJack Floor Chair &ndash; Portable - XL Size - Purple CONVENIENT - Lightweight and portable-take it anywhere! Backrest is 16" wide x 23" tall. NO MORE UNCOMFORTABLE SEATING  The BackJack is an ergonomic chair that provides back support and lumbar support so you no longer have to be slouched over when sitting on the floor. COTTON SEAT  Makes for a comfortable and personal way to sit with friends and family. TWO POSITIONS - Unique design allows sitting or reclining simply by switching from a vertical position to horizontal. MULTI-PURPOSE  Can be used just about anywhere from the home, sporting events, camping, and more.