The Smartwool NTS 250 Midweight Funnel Zip Top is the baselayer that offers more FUN and more options than the others. With a taller-than-turtleneck collar and a elongated quarter zip you have the option of wearing the funnel as a cozy zipped up layer or unzipping to vent heat and show off the patterned inner collar. Perfect for both a day on the frigid slopes and hanging out afterward with a cocktail in front of the fire.