Delta Jacket Men's is a durable fleece jacket designed for climbing, hiking, trail running, bouldering, and rock climbing, built to be a durable, breathable layer that delivers thermal performance for minimal weight. Product Type: Men’s lightweight fleece jacket Material: N/A Weight: N/A Octagonal hollow-core construction improves warmth-to-weight ratio. Smooth face helps with easy layering and improves durability. Trim fit with low-profile seams reduces chafing and is patterned to move. Layer it under a men’s shell jacket for weather protection, and pair with men’s hiking pants for climbing and hiking. A new type of fleece, a new level of performance. Still soft, still breathable, it’s elevated with an innovative octagonal hollow-core construction for a much better warmth-to-weight ratio and a smooth face for easy layering and improved durability. A trim fit patterned to move and low-profile seams that reduce chafing combine to create a technical, comfortable fleece for all your mountain missions. Size and fit tip: The Deltas offer a roomier fit in the body and sleeves than their predecessors, for improved comfort, versatility, and freedom of movement during high-output activities.