The Helly Hansen Evolved Air Hooded Midlayer is built from 100% recycled polyester in a monomaterial construction, so the whole piece can be recycled again once it's worn out. Ocean Bound materials, sourced from coastal regions at risk of plastic pollution, make up the fabric, while a high protective collar and constructed hood guard against the elements. Flatlock seams and an anti-chafe chin guard keep the comfort dialed in even when the layer is doing real work. What Our Gearhead(R) Experts Are Saying:"I zipped the hood up tight on a windy exposed ridge and the chin guard kept the zipper from biting into my neck the whole way down. The flatlock seams never rubbed, even under a pack strap."