Ideally, thermals are to be worn when the temperature goes below 10°C. It can go up or down depending on your body’s temperature-withstanding capability. The main duty of the thermals is to keep your body warm and dry. They are moisture-wicking and breathable. So, if you don’t wear thermals under your regular clothes, then when you sweat, your clothes will get wet which can make you feel itchy and, in the worst-case scenario, even hypothermia. Hence, it is always advisable to wear thermals as your first layer when in the cold and then layer it up with your regular clothes, sweaters, and jackets.

Choosing the right thermal depends on several factors including the occasion, temperature range, fabric, and the activities you may participate in. Generally, there are three fabric compositions in which the thermals come: polyester blend, cotton & wool. Wool is the most preferred out of the three as it is the warmest. Depending on the occasion and activity, you may choose a lightweight thermal and later layer up depending on your demands. There are also options for temperature-adaptive thermal wear which keep you warm and then adapt as the temperature gets warmer. This also helps you reduce the need for other layers.

Thermals are always better in a snug and comfortable fit. It needs to be worn closer to your body. If it's too loose, it will not serve the purpose of keeping you warm. So, if you find yourself straddling two sizes, remember: for thermals, go for the smaller size.

As one sweats less in winter, avoid over-washing this garment to keep the fabric newer and longer. Its inbuilt moisture-wicking and odor-resistant properties allow it to be worn for 3 to 5 days at a time without washing. If your travel plans are slightly longer (more than a week), it is better to take 2 thermal sets - use one for the daytime and one for the night.

Our thermal wear is made of a unique combination of fine merino wool and bamboo. Unlike traditional thermals, we designed it such that you won't feel bulky when wearing it. It is lightweight, warm, anti-odor, and temperature-regulating. You can use them for more than 200 washes without compromising the quality.

Kosha thermals are lightweight consciously. So even though it is thin, it is designed without compromising warmth or performance. They are tested in temperatures ranging from -20°C to 15°C.

Absolutely! If you are feeling cold, wearing two thermals is a great idea, especially when traveling to regions with windchill or extreme temperature changes.