The men's Burton Reserve 2L 3-in-1 Pants add removable insulated liner shorts to our high-performance 20k/20k two-layer shell pants for added warmth on cold chairlift rides and stormy days. A snap closure and fly mean the shorts fit and look great when worn on their own, too. A full package of rider-designed features like taped seams, removable suspenders, functional pockets, and thigh vents adds up to hassle-free days on the mountain.