Compared across 2 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. Price via Klarna.
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The Smartwool Classic Thermal Merino Base Layer One-Piece is a full-body suit in 100% merino wool, cut slim for layering under ski, snowboard and cold-weather gear. The one-piece design eliminates the cold gap at the waist that two-piece base layers leave, and merino's natural odor resistance means it can go several days between washes on a trip. It is a niche piece: skiers, snowboarders and winter campers who feel the cold get the most from it, while anyone who layers separately or runs hot will find it overkill. Against synthetic one-pieces it breathes better and resists smell, but it costs more and needs gentler washing.
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Lowest price we've seen: $250.00 on Nov 10 at Smartwool. Tracked across 2 stores since Nov 10.
Owners of Smartwool's merino one-pieces praise the warmth-to-weight ratio, the lack of a cold waist gap and how many days the wool stays fresh. Complaints center on the slim cut, the fussy laundering and the price relative to synthetic suits.
