We’ve selected a high-quality merino blend fabric sourced from the renowned textile region of Biella, Italy for its specific performance qualities. Temperature regulating, it keeps you warm when you’re chilly and cool as your ride intensity and body temperature kicks up. It’s fast-drying, sweat-wicking and odour-resistant, and can hang dry between sessions or on multi-day rides without the need for washing after every use. Blended with premium synthetic fibres for the added benefit of enhanced durability and stretch retention.

Featuring an open mesh structure for further optimised breathability and flatlocked low profile seams to prevent chafing - delivering exceptional comfort over long distances. Designed for a close fit, the base layer sits snugly against the body, enhancing the effectiveness of its thermal regulating and moisture-wicking properties while ensuring freedom of movement.

Also available in sleeveless and short sleeved options.

We’ve selected a high-quality merino blend fabric sourced from the renowned textile region of Biella, Italy for its specific performance qualities. Temperature regulating, it keeps you warm and protected from windchill, whether descending or stopping to refuel and keeps you cool when the intensity of your ride kicks up. It’s exceptionally soft against the skin, fast-wicking and odour-resistant – so you can hang it to air out between sessions or on multi-day rides. Blended with premium synthetic fibres, the base layer ensures the added benefit of enhanced durability and stretch retention.

Featuring an open mesh structure for further optimised breathability and flatlocked low profile seams to prevent chafing - delivering exceptional comfort over long distances. Designed for a close fit, the base layer sits snugly against the skin.

Also available in sleeveless and long sleeved options.

We’ve selected a high-quality merino blend fabric sourced from the renowned textile region of Biella, Italy for its specific performance qualities. Temperature regulating, it keeps you warm and protected from windchill, whether descending or stopping to refuel and keeps you cool when the intensity of your ride kicks up. It’s exceptionally soft against the skin, fast-wicking and odour-resistant – so you can hang it to air out between sessions or on multi-day rides. Blended with premium synthetic fibres, the base layer ensures the added benefit of enhanced durability and stretch retention.

Featuring an open mesh structure for further optimised breathability and flatlocked low profile seams to prevent chafing - delivering exceptional comfort over long distances. Designed for a close fit, the base layer sits snugly against the skin.

Also available in short and long sleeved options.

Designed specifically for dedicated riders who ride through the depths of winter, the ARC Merino Deep Winter Base Layer offers the warmth, comfort, and performance needed when conditions are at their harshest. Whether you're heading out for structured training, exploring off-road, or braving the morning commute, it delivers dependable insulation without compromise.

Crafted from an exceptionally soft, insulating merino blend, it naturally regulates temperature and wicks moisture, keeping you warm and dry, even as your effort increases. A high, ergonomic snood collar adds extra protection from cold winds and features a discreet ponytail hole for all-day comfort and practicality on the bike.

Windproof panelling across the chest blocks the chill where it hits hardest, while mesh inserts at the sides and rear provide targeted ventilation in key heat zones to balance breathability with warmth.

An improved seam layout ensures a close, irritation-free fit against the skin, while a dropped rear hem offers added coverage when you're in a riding position.

The ARC Merino Deep Winter Base Layer is your essential first layer for cold-weather riding—built for performance, tailored for women, and tested in the worst winter can throw at you.