evo.com | Stio Button-Downs > The Stio Buckhorn Insulated Flannel turns traditional flannel into the ultimate winter warmer with body-mapped insulation. Thermore(R) Ecodown(R) in the core and sleeves keeps your torso warm while maintaining mobility, making this equally appropriate for backyard fires or mountain adventures. Hanger Loop on Center Back Neck Outer Mid Weight Organic Cotton Flannel Reinforced Collar for Structure Regular Fit A casually shaped design that's not too tight and not too baggy. Insulation Thermore(R) Ecodown(R) Staple Filament Insulation, 100% Recycled Polyester, Body 60g / Sleeves 40g | Stio Buckhorn Insulated Snap Shirt Men's 2025 - Small Blue | Cotton/Polyester