This flagship model is one of the lightest, most technologically advanced wheelchairs in its category. The HELIO C2 is the result of a series of innovations, it features revolutionary components, an impeccable finish and all the advantages carbon fiber offers. seat approx size 18x18 max 250 lbs. Highly adjustable backrest anti tipper break extentions airless wheels quick release rims seat belt transportion tie downs on all 4 corners cabon fiber seat frame. Light and very manuverable. Highend Seat cushion.