Suitable size range:

normal size-1 :Length 50-63cm Width 50-65cm Height 5-20cm

normal size-2 :Length 100-125cm Width 50-65cm Height 5-20cm

normal size-3 :Length 150-190cm Width 50-65cm Height 5-20cm

normal size-4 :Length 230-280cm Width 50-65cm Height 5-20cm

enlarge size-1 :Length 65-95cm Width 65-95cm Height 5-20cm

enlarge size-2 :Length 95-135cm Width 65-95cm Height 5-20cm

enlarge size-3:Length 135-165cm Width 65-95cm Height 5-20cm

enlarge size-4 :Length 165-200cm Width 65-95cm Height 5-20cm

Backrest cover :Length 60-90cm Width 30-50cm Height 5-20cm

enlarge size-5 :Length 160-190cm Width 90-110cm Height 5-20cm