The OM3 mid layer is evocative of space wear. The incredible fit which wraps your body without feeling tight, is facilitated by our high tech Stelvio fabric. The four-way stretch and four-point flat stitching means you won't know you're wearing it. It's extremely soft on your skin whilst retaining its durability on the outside. It also possesses incredible thermal properties, keeping you warm while also being quick dry for when the time comes to sweat it out. The obsidian print will remind everyone that this is unequivocally a Petra prototype, engineered by Dr Pietro Boselli in London, and entirely manufactured in Italy.