Whether the sun is going down, or just hasn't come up yet, the Sundown 250 1/2 Zip rises to the occasion. A familiar waffle-knit structure, which has always been a go-to for offering superior warmth, in the lightest and most packable package. A staple component of A/SYS-2, the Sundown is super-charged with Nuyarn merino Technology, so you won't care if the sun ever comes up.
