Inspired by climbers, then refined to perform across a broad range of alpine activities, the Delta is a go-to when thermal efficiency, stretch, and all-mountain versatility are required. The Polartec Power Dry fleece’s voided grid construction delivers a high warmth to weight ratio and provides outstanding freedom of movement. Performing as a midlayer in cold conditions or a standalone in cooler temperatures, its versatility and comfort make it an essential piece of any mountain kit. This model is an updated design of the Delta LT Jacket with a revised fit and warmer fleece. 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. This model's fit has evolved.