100% DWR coated microfiber nylon, with 4 grams of fiber fill is all you need for the streets and on the hill. Layer it with a Tech Zip Hoodie for those super cold days. FITTING INFO FOR SLEEPING BAG HOODIE: Our Blood Line apparel is designed to be layered, allowing you to quickly adapt to changes in activities and environments. We understand that you don’t want a $600 jacket just for shredding. Our tech streetwear can be worn individually or layered, performing just as well—or even better—through smart layering. The Sleeping Bag Hoodie is our final insulating layer (sealing layer), meant to be worn over most of our Tech Hoodies. As a result, it’s designed to fit slightly roomier. Don’t just stay warm—stay stylish! Grab your Sleeping Bag Hoodie and make comfort your new cool!