From the manufacturer

Ideal for layering up or simply keeping the chill off on cool hikes, climbs, and scrambles, the Nexus Jacket is a versatile staple. With an understated style and low-bulk slim fit, this lightweight midlayer allows unhindered arm movement when you’re reaching for the next hold. It’s constructed with fast-drying Thermic™ G fleece which expertly balances warmth and breathability, making it perfectly adapted to high-energy mountain activities where the intensity fluctuates and weather changes fast.

Features

• The Thermic™ G stretch fabric regulates your temperature, dries quickly, and offers great breathability and mobility.
• YKK® VISLON® centre front zip with zip guard.
• The soft, close-fitting collar provides additional warmth at an exposed crag. 
• Exceptionally comfortable and easy to layer in cool conditions, thanks to the slim fit and low-bulk seams.
• Handy storage in two zipped mesh-lined pockets.
• Seal in the warmth with the cosy double cuffs.

Specifications

• Fit: Regular
• Weight: 222g
• Center Back Length: 24.8in (size 10)
• Main Fabric: Thermic™ G (178gsm) Circular backer recycled polyester fleece