{"pageUrl":"https://comparethespecs.com/fitness-outdoors/winter-sports/what-are-the-warmest-winter-base-layers-available","lastUpdated":"2026-09-14","totalProducts":1,"niche":"What are the warmest winter base layers available?","description":"What are the warmest winter base layers available?","products":[{"brand":"Meriwool","model":"Merino 250 Long Sleeves","price_gbp":48.06,"origin_country":null,"specs":{"weight":"312","material":"100% superfine 18.5-micron Merino wool","warmth_rating":"7.0","odor_resistance":"Yes"},"confidence_score":null,"sources":[{"label":"Meriwool","url":"https://www.meriwoollayers.com/products/mens-merino-250-base-layer-long-sleeve","currency":"USD","source_country":"US","price":65.0,"price_gbp":48.06,"scraped_at":"2026-09-14T00:39:44.489999"}],"summary":"This midweight base layer uses 250g/m2 interlock-knit Merino wool for warmth, breathability, and temperature regulation. It is a slim-fitting option suited to winter layering, skiing, hiking, camping, and everyday cold-weather wear.","ideal_for":"It suits the search for the warmest winter base layers because its 250g/m2 midweight construction delivers a tested warmth rating of 7.0 while retaining Merino wool's natural odor resistance and insulating properties."}]}