These user friendly bindings are great for classic skiing. The bindings provide stability and control, while the automatic step in step out mechanism allows easy onoff access.. . Material: Composite, rubber, steel. Flex design provides enhanced comfort. Weight: 6 oz.. Skis and bindings are shipped unmounted and unadjusted. Skis, boots and bindings including track mounted bindings must be installed, adjusted and tested as a complete system by a qualified ski technician prior to use. Please contact our Customer Service Department at 888.463.6367 for help locating one of our stores that can perform the mounting service..