Aluminum Crystal Card Size:One Size The boot features a Prolink

The boot features a Prolink outsole which gives you an exceptional snow feel (and means the boot works with all 2-rail bindings including NNN and Turnamic )

Good sliding properties

The ultra-lightweight microfiber cape is ventilated for airflow

Updated for 2019 to add compatibility with the unique Sea to Summit unique Pillow Lock system

Aluminum Crystal Card Size:One Size The boot features a ProlinkThe aluminum crystal card provides a surface to analyze classify snow grains and also has a slope index, which allows you to determine slope angles from a topographical map. Snow crystals placed on the card become recognizable and sizable. With the aluminum card version, you can expect durability and long term usage. This small yet very informational tool will take your snow safety skills to a new level.