Before you embark on a cold-climate getaway, it is wise to stock up on your winter woollies.
One of the first, and most important, places to start is with your thermal underwear – an essential part of keeping your temperature regular and your body warm. It is vital to keep your core healthy and warm by investing in good-quality, breathable thermals. When choosing your thermal underwear, try to find long tops that can be easily tucked in, ensuring that your kidneys are warm. Make sure you try your thermal pants on, prior to purchasing, to ensure the waistband is comfortable to wear during the day and night. You can talk to your local adventure or camping store to determine whether you should wear long-sleeve thermals, or a singlet version. The Icebreaker range is machine-washable and comes in an assortment of sustainable, natural Merino wool from New Zealand.
I found the thermals I bought from my local Kathmandu store for a trip to New Zealand were awsome! Quick drying and very warm. They had a huge number of styles and were very helpful. If you need thermals check it out.