Here's what other sites are saying:
The Backcountry Access Aluminum Crystal Card helps you make an informed decision about the current snowpack conditions when you're skiing in the backcountry. BCA printed this card with one-, two-, and three-millimeter grids as well as a cheat sheet for analyzing snow crystal types and sizes. The small aluminum card slides easily into your pocket or snow study kit.
evo.com | BCA Snow Study Tools > Avalanche professionals, serious ski tourists and Avy Level II and above students will need the durable BCA Aluminum Crystal Card as part of their ongoing study of the snowpack. Aluminium 1 mm and 3 mm grids Protective clear coat Snow grain classification | BCA Aluminum Crystal Card 2020
Backcountry Access's Crystal Card is a basic snow safety tool that will help you in making an informed decision about the snowpack you're about to attack. An aluminum card with printed information on basic snow crystal types, it's easy to carry in a pocket and reference on moment's notice.
- Mountain Gear
Backcountry Access Avalanche Safety Aluminum Crystal Card C1318SS13010.
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