As seen at the 2019 International Seating Symposium: Give your littlest power wheelchair users support right where they need it. The new Matrx Mini Flex is adjustable in width to fit Mini backs 10″ to 14″ wide. A keyhole design enables ease of application. Stretch Neoprene makes the Mini Flex comfortable and functional for active kids. Choose the Mini Flex in size XS (4.5″ high) or size S (6″ high).