Durashell™ is Burton’s proprietary waterproof, breathable shell fabric. A multi-layer design similar to other technical outerwear materials, the outer membrane of this fabric is water and windproof, but also gas permeable. This quality allows the garment to maintain a level of breathability, even in harsh weather. The inner layer has a hydrophilic coating that helps to draw excess moisture and heat away from the body. This technology is backed by Burton’s DRYRIDE seal of approval, meaning it’ll keep your kids dry and warm throughout the day.