Backcountry tours, summit grabs, winter sends—however we're getting after it in the cold and snowy months, we're layering up with icebreaker's Merino Quantum Hybrid Long-Sleeve Zip Hooded Jacket. The soft merino-lyocell construction regulates our body heat, wicks away our sweat, and prevents the stink of effort from forming, while the chest's insulated panels turn up the heat where we need it most.