I believe you are thinking of the Mountainsmith sled. For years, they made a good selection of all-purpose kid-transport and expedition-load sleds. They quit making them several years ago, but sold the product line to a Colorado company called Kifaru, which also makes a line of tepee-style tents.
Basically, Kifaru has continued the entire Mountainsmith sled line聴including the all-around Armadillo ($375), the giant Expedition ($495), and “kid kits” for converting either to a child hauler ($110 to $160).
Alternatively, a British Columbia outfit called Brette Manufacturing makes several sleds similar to the Kifaru products. These feature a molded plastic hull with aluminum traces. Brette’s basic gear-hauling sled is called the Buggaboo Buggy, which sells for $295 U.S. A child seat can be added for an additional $70. So that makes it pretty competitive with U.S.-built sleds.
Sleds make great sense in many situations. With a sled, one person can haul 100 pounds or more without too much trouble, carrying 30 to 40 pounds in a pack and dragging the rest along behind. Sleds are perfect for self-supported winter expeditions, such as climbing Denali or a long ski trek in the Rockies. In skilled hands they can be maneuvered nicely even when the hauler is wearing skis, and with snowshoes they’re very easy to manage.
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