Wheelchairs, Mobility Scooters and Accessories Accessories & Parts, Covers, Mobility & Daily Living Aids, Mobility Aids & Equipment Challenger Mobility CMC-324 Vinyl Lightweight Weather Cover for Jazzy Power Chair, Large Size Review by RoomPony June 22, 2018 No Comments Challenger Mobility cover is our best selling vinyl weather cover. It will extend the life of a mobility vehicle. This listing is for a large power chair size – that fits chairs up to: Length 45″ x width 27″ x height 43″.