Recognizing the varied needs for outdoor pursuits, Arc'teryx offers a comprehensive range of base layers tailored to suit individual requirements and preferences. Three distinct technologies, with a range of choices, deliver base layer comfort and exceptional performance.

Rho base layers are suited for cold temperatures, slower-paced pursuits, or conditions that require maximum thermal efficiency. Brushed Rho knit fabrics have a soft, plush texture that is radiant next to the skin. For example, the Rho LTW Bottom.

Eon base layers regulate heat over the broadest temperature range. Made from merino wool and a high percentage of Spandex®, these garments supply natural-fibre comfort across a variety of conditions. For example, the Eon SLW Hoody.

Phase base layers are specifically created for high output interval activities, and conditions where moisture management is crucial. Phase garments feature a mechanical stretch yarn, eliminating the need for slow-drying elastic fibres. For example, the Phase AR Zip Neck LS.