Duniopillo Ring Cushion: The Dunlopillo Ring Cushion offers comfort when sitting. The flame retardant Dunlopillo Ring Cushion is made of bacteria-static latex foam. Also available, the AA3942 Ring Cushion Cover Can be steam sterilised. External diameter 432mm 17”. Internal diameter 127mm 5”. The cover is purchased separately. It is made from flame retardant cotton. Size 475 x 500mm 18 3/4 x 19 3/4”. For further information please contact your local shop or call 01908 644133 (Luton 01582 487878). We look forward to hearing from you.