Intraknit Alpine 1/4 Zip — Men's Snow Helmets Mesh-covered foam lumbar for lightweight

Mesh-covered foam lumbar for lightweight and comfortable contact surfaces

exterior pocket on the angler's right side offers easily accessible storage

Not sure which box is right for you

Folds down when not in use for better aerodynamics and easier access to your garage

memory foam mid layer

Intraknit Alpine 1/4 Zip — Men's Snow Helmets Mesh-covered foam lumbar for lightweightThe Smartwool Intraknit Alpine 1 4 Zip for men is a high performing base layer designed for active comfort and warmth in cold weather. It's a technical piece featuring Smartwool's Intraknit technology, which integrates insulation, articulation, and ventilation for optimal performance during high intensity activities.