
Thermal Tops
22 products
Showing 1 - 22 of 22 products
Thermal tops are great when preparing for an adventure in a cold climate. Having a breathable baselayer top will ensure you are safe and warm throughout your activity. K2 Base Camp has you covered with our wide collection of complimenting thermal apparel including pants, gloves, insulated footwear, and headwear.
Our thermal tops are designed by high-performance outdoor clothing brands such as Icebreaker, Le Bent, and Mont, allowing you to experience simple, beautiful, and high-quality apparel that lets your skin breathe for comfort all day, every day. Shop the K2 Base Camp thermal top collection below.


























Whether you are looking for a thermal top with the right stretch, breathability, or comfort, K2 Base Camp has something for your next adventure.
How to select the best thermal top for your activity
All the thermal tops in our collection are designed with versatility and purpose in mind. Most thermal tops are made of 100% merino knit wool for their superior warmth, moisture-wicking, temperature regulation, and softness.
Icebreaker is especially well-known for its merino wool and synthetic fibre blend thermal tops, delivering further performance features. A light-medium thermal top with a 200gsm density is the ideal weight for hiking, climbing, and camping. Tops with a density greater than 200gsm will provide you with additional thermal protection to suit freezing conditions.