These comfortable winter long johns are brilliant for a winter base layer or as part of your sleep system. Icebreaker says:The benchmark against which all others are judged, the 200 Oasis Legless are icebreaker’s ultra-comfortable base layer bottoms that make the perfect foundation for your everyday cold-weather layering system. Made with 100% merino wool jersey fabric thats breathable, insulating, and odor-resistant, the Oasis features a slim fit and gusseted construction for unrestricted freedom of movement. The short leg eliminates bunching when worn with boots, and the brushed elastic waistband and flatlock seams throughout eliminate chafing.Inspired by nature, icebreaker harnesses the performance qualities of natural fibers to offer an alternative to clothing based on petrochemical synthetics. Merino is an annually renewable fiber that naturally resists odors, keeps you cool when its hot and warm when its not, and lets your skin breathe for comfort all day, every day.Our VerdictThese 100% Merino wool Long Johns are next to skin soft and naturally order resistant, so you can wear them for a few days on the trail without being too smelly. They are breathable and have excellent moisture management, keeping you dry and comfortable when exerting yourself even with layers over the top. The flat-locked seams prevent chafing, and the gusseted crotch keeps everything comfortably in place.I use these as a thermal baselayer when winter trekking; they are warm and cosy, but I get most use out of these as my lightweight PJs the rest of the year, so I get a lot of use out of these.- Reviewed by Ultralight Outdoor GearFeaturesSoft merino fibers that regulates body temperature in all weather conditions and resists odorsGusset for mobility and comfortFlatlock seams to prevent frictionBody temperature regulationBreathableMoisture-managingOdor resistantWarm when wetBiodegradable fiberSpecificationsSmall weighs: 151gMedium weighs: 160gLarge weighs: 175gXLarge weighs: 186 gMaterial & Construction100% Pure MerinoHelp & advice:The Ultimate Guide to Lightweight BaselayersThe Benefits of Merino Wool

These comfortable winter long johns are brilliant for a winter base layer or as part of your sleep system. Icebreaker says:The benchmark against which all others are judged, the 200 Oasis Legless are icebreaker’s