TheLezyne Smart Chainstay Protector. The Lezyne Heavy duty Neoprene is durable, resists fading, and stretches to fit tightly. Lezyne Smart Chainstay ProtectorFeatures Size: Small (95 x 250mm), Medium (130 x 250mm) and Large (180 x 250mm) Velcro attachments Machine washable
Best Price: £12.50 from Leisure Lakes Bikes