The SnowBigDeal American Avalanche Probe is a probe measured in feet and inches, instead of in centimeters. The 10 foot probe is equivalent to a 305 centimeter probe. Made of lightweight Aluminum, this Avalanche Probe is a necessity for all backcountry goers. With a simple and easy to assemble probe, you wont waste precious time when seconds count. The top section fits inside the next probe section, reducing the number of sections and size of the avalanche probe when not in use.