The Pro Combi Prolink is NNN-compatible and features Salomon's popular quicklace system and adjustable heel strap to provide solid heel hold.

More about combi boots:

The combi boot is, as the name implies, a boot designed to be used for both skate and classic skiing. Essentially a classic boot with a skating cuff, the combi is an option for those looking for one boot to do it all. We also find that combi boots work well for people seeking extra ankle support while classic skiing or even as a very light touring boot. We have found, however, that the combi design results in a compromise that reduces performance—particularly when skating. The reason for this is that the sole must be soft enough for classic skiing and so there is an appreciable loss of torsional control and power transmission. This will be noticeable when skiing longer durations.