The Smartwool Men&';s Smartloft Hybrid Jacket blends recycled-wool Smartloft insulation with stretchy Merino-blend fleece for lightweight, packable warmth that moves with you. The insulated body traps heat where you need it most, while breathable fleece side and underarm panels dump excess heat and add mobility. A wind-resistant, DWR-treated shell protects against the elements, making it an ideal mid-layer or standalone piece for any winter adventure. Features: Smartloft Insulation - recycled-wool fill for lightweight, packable warmth in wet or dry conditions Hybrid Construction - insulated body with breathable Merino-blend fleece panels for mobility and heat dumping Merino Wool Lining - wicks moisture, regulates temperature, and resists odor Wind-Resistant, DWR-Treated Shell - protection from cold gusts and light moisture Zippered Pockets - secure storage for your essentials