As green as green gets, the Verde 20 is as far as we could push our Green Effect program. Climashield Green insulation is post-consumer recycled polyester. EcoSensor Recycled Shell material is spun from recycled materials, too. The Cocona Woven liner incorporates sustainable, all-natural Cocona for improved moisture management and odor prevention. Warm, comfortable, durable, just like all our bags, in the most earth-friendly version we could dream up—the Verde 20.