The b73 has three coil springs and is ideal for both heavy duty and touring use even the worst road conditions can be made to feel at least some what comfortablebags loops on back of saddledont forget to use proofide regularily to ensure maximum comfort and longevity of your saddle why not purchase the new brooks maintenance kit which includes a tin of proofide a tension spanner and the brooks cleaning cloth to give your saddle that well deserved tlc