An innovative recycled performance fabric meets our all-terrain sling: MOUNTAIN Hip Pack 3.5L

Inspired by 35 years of creating advanced sailcloth fabrics, ECOPAK was developed by Challenge Outdoor as the world's only durable and waterproof fabric made from 100% recycled polyester film and fiber. Reclaimed plastic bottles turned into a stunning and eco-friendly textile more durable than traditional laminated nylon? Count us in.

We utilized a beautiful variation of ECOPAK, EPX400, as our main material and RBC400 (Recycled Bag Cloth) as our lining (more info on these incredible materials below). Then, we utilized PU-coated YKK Zippers for extra weather resistance.

With our signature design and exceptional fit, we present a unique, eco-friendly version of our mountain sling, built to handle years of rugged use.

See the entire ECOPAK collection here.