BarrierWeave™ fabric is tightly woven and specially finished to be up to 3 times more leak proof, so down and feathers won't sneak out. BarrierWeave ™ fabric is also finer, softer and more durable for lasting comfort and easy care. Hyperclean®. Our unique cleaning method washes and rinses our down and feathers up to eight times, removing the dust, dirt and allergens that cause allergic reactions. You're left with only clean, fluffy, supremely comfortable down and feathers.