Smartwool Boundary Line Reversible Beanie Hat Neon Yellow and Green Nice Smartwool reversible beanie in good used condition. Two different looks in one hat! It's dark green/teal with lime stripes on one side and bright lime green with the Smartwool logo on the other. It's an older/discontinued Smartwool style. Style SW000441, which was made as a double-layer reversible beanie hat designed to work well under helmets! Warm, lightweight, and great for hiking, skiing, running, or just everyday winter wear. One size fits most. #Smartwool #WinterHat #HikingGear #SkiGear #RunningGear