Backcountry Access (BCA) is an avalanche and winter safety gear brand based in Boulder, Colorado whose mission is to not only design and create avalanche safety gear, but to educate backcountry skiers and hikers on the best methods for using their products. Learn more about BCA's full line of avalanche transmitters, stash backpacks, shovels and winter packages with in-depth avalanche safety gear reviews from Backpacker.