Mens Long Johns Thermal Underwear

Our super-smooth merino wool thermal underwear for men is comfortable, practical and long-wearing.

Experience personal climate-control in hard-wearing, super-soft merino wool

Our machine-washable Australian merino wool layers can be worn as long johns, thermal underwear, sleepwear, exercise gear or outerwear. We make durable, smooth, comfortable pieces that can be layered for extra warmth. Choose from a range of weights and fabric blends for maximum comfort. Our heavyweight thermals are worn by many of the Tasmanian Police Search and Rescue Helicopter crew.

High quality thermal layers will provide years of comfort and style

Smitten thermals aren't just underwear – our range of colors and patterns makes them garments you can wear as inner or outer layers. Smooth super-fine merino fabric has superb skin-feel and is completely breathable, helping you to regulate your temperature whether you're walking around town, jogging, hanging out at home or bushwalking. All of our hard-wearing clothes are made to a high standard and loved by active folk like mountain-bikers and hikers since they can be machine washed and worn again and again for years to come.


Quality thermal layers will save you money, since they look amazing and last for years

Don't settle for boring thermals that only last a season. Color your cold days with thermals from the colorful Smitten range – feel comfortable and look good at the same time.

Ethical wool, sourced from Tasmanian and other Australian producers – caring for animals and caring for you

All Smitten merino wool is sustainably grown using non-mulesed sheep here in beautiful Tasmania and other selected regions within Australia. The ultra-fine merino wool in our thermal underwear undergoes a stringent process before it touches your body; cleaning and spinning, coloring, design, machining, construction and quality control. The end result is stunning sustainable, natural fibre garments that have been tested in all weather.

Smitten wool is a distinctive, super-soft fabric with incredible breathable, thermal properties, so you can wear the same garment in layers to keep you warm on cool days without bulk, and on its own in warm weather to give you breezy, comfortable style. Merino wool is a beautiful, natural option for sensitive skins, with the convenience of being machine washable. Our products are sewn here in Australia by skilled Australian women, sold by our proud Tasmanian family business.

Mens Long Johns Thermal Underwear | Made in Tasmania. Inspired By Nature.

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