The Deltas – originally inspired by climbers, then refined to perform across a wide range of activities and conditions – are your go-to when thermal efficiency, stretch, and all-mountain versatility are required. Made with wicking fibres, the Polartec® Power Dry® fleece’s voided grid construction delivers a high warmth to weight ratio and has a smooth face that layers easily under a shell. The ScubaHood™ fits under a helmet and integrates a panel that wears as a neck gaiter or balaclava.

Size and Fit Tips: Fitted Fit - This trimmer fit is patterned to stay close to the body through the chest, waist, hip, and thigh. Its low profile eliminates bulk, moves with the body, and fits comfortably under outer layers. Be sure to reference our new sizing charts before you check out.