GearJunkie.com- Sierra Designs DriDown "Best in Show"
February 10, 2012
Live demonstrations at the OR Show were hard to ignore. Sierra Designs, which will release sleeping bags and puffy jackets with water-resistant down, had large Plexiglas beakers filled with treated feathers suspended in water. Show attendees could spin and tilt the beakers on a stand to submerge treated and regular down. It was easy to see the treated feathers absorbed much less water than the old fashioned fluff off a goose’s back.
The company backs off just short of saying "waterproof." But a new down-insulation treatment used in a line of to-be-released sleeping bags and jackets from Sierra Designs is being touted as "revolutionizing" the category.