Arc'teryx Delta

The Arc'teryx Delta Jacket is a technical fleece mid layer engineered for mountain performance. Its innovative Octa hollow-core construction traps heat as effectively as heavier yarns while keeping weight down, and the smooth face enhances durability while making it easy to layer. The result is a breathable, remarkably warm fleece with an excellent warmth-to-weight ratio for high-output missions.

The fitted pattern is articulated for mobility and comfort, with flatlock seams that reduce chafing and improve next-to-skin feel. A chin guard adds comfort, elasticized cuffs seal in warmth, and a laminated chest pocket plus two hand pockets keep essentials close. The jacket contains recycled content and meets bluesign® criteria, with an anti-odour finish and PFAS-compliant materials.

Whether you're on an alpine climb, a rock route, bouldering, or a long hike, the Delta Jacket performs across demanding outdoor activities. Its trim fit moves with the body and layers cleanly under a hardshell or over a base layer, delivering versatile thermal comfort wherever the mountain takes you.