A lightweight thermal singlet, that is naturally soft, warm and odor resistant. Perfect for layering, casual wear and hiking. Merino wool is breathable and has temperature regulating qualities. Please see size chart and double check your measurments.  They are designed to hug the body, not sit loosely. Naturally dyed with Eucalyptus leaves and metal. Singlets are made by Macpac with New Zealand merino wool.