Bula Functional Base Layers

Need a layer that works as hard as you do? In the Functional Base Layers section, you’ll find high-performance pieces designed to keep you dry, warm, and comfortable—no matter the conditions. Whether you're hitting the slopes, heading out for a winter run, or just layering up for a chilly day, these essentials form the foundation of your outfit.

This category includes thermal tops and bottoms, compression layers, and seamless designs made from technical fabrics like merino wool, polyester blends, and moisture-wicking synthetics. They’re built to regulate body temperature, manage sweat, and reduce friction—so you stay focused and comfortable during every activity. Many options also offer added stretch for freedom of movement and flatlock seams to prevent chafing.

From cold-weather training to everyday layering, these base layers are your first line of defence against the elements. Choose what fits your routine and stay ready for whatever the day throws at you.

All of these functional underwear (19 types) are in stock on our e-shop or in our stores. But your purchase doesn't have to end there. See also other products from the Functional Base Layers category or contact our customer support.

You might be interested in: Men's Functional Clothing   Women's Functional Clothing   Kids' Functional Clothing