evo.com | Stio Insulated Jackets > PeakFill Active insulation is the engine behind the Stio Fernos Insulated Hooded Jacket, an award-winning midlayer for high-output days in the mountains. Its spiral filament structure stretches, recovers and dries faster than traditional lofted fills while keeping your core temperature steady. A Relance Primeflex shell with a PFAS-free DWR sheds light weather, and stretch side and sleeve panels plus a low-profile hood keep you moving freely. Regular Fit A casually shaped design that's not too tight and not too baggy. PeakFill(TM) Active Insulation Proprietary insulation balances warmth and breathability to maintain lasting athletic comfort across the entire conditional range. Designed to keep core temps regulated, the synthetic fiber fill draws on a spiral filament structure to enable greater stretch, faster recovery and quicker dry times than traditional lofted insulation. Water-Repellent Finish Resists Water Fixed Hood With Peripheral Adjust Zippered Chest Pocket | Stio Fernos Insulated Hooded Jacket Men's 2027 - 2X-Large Gray