The Arc’teryx Delta 1/2 Zip is a lightweight technical fleece midlayer designed to deliver exceptional warmth for minimal weight during high-output training and outdoor use. Built with innovative hollow-core fleece fibres, it provides excellent thermal efficiency while remaining breathable and comfortable against the skin. Stretch panels under the arms improve mobility and moisture management, making the Delta 1/2 Zip a versatile layer for running, hiking, climbing, and cold-weather training.
The smooth-face fleece construction increases durability and allows easy layering under shells or jackets, while the articulated patterning ensures unrestricted movement. Designed to perform across a wide range of conditions, the Delta works equally well as a standalone piece or as part of a technical layering system.
Key Features
Hollow-core fleece construction provides excellent warmth-to-weight ratio
Breathable fabric designed for high-output activity
Phasic™ AR II stretch panels under arms for mobility and moisture management
Smooth face fabric improves durability and layering comfort
Half-zip design allows easy ventilation and temperature control
Articulated patterning for unrestricted movement
Flatlock seams improve next-to-skin comfort
Chin guard for added comfort when zipped
Trim athletic fit for layering or standalone wear
Lightweight, packable performance fleece
Best for running, hiking, climbing, skiing, and cold-weather training
