Challenger Mobility CMC-324 Vinyl Lightweight Weather Cover for Jazzy Power Chair, Large Size Review DanceDiva December 27, 2018 December 27, 2018 No Comments on Challenger Mobility CMC-324 Vinyl Lightweight Weather Cover for Jazzy Power Chair, Large Size Review 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″.