A stretchier, lighter version of the brand’s popular Coefficient fleece, Black Diamond added insulation to the Black Diamond Coefficient LT Hybrid to make it the ideal layering choice for high-mountain exertion. A lightly insulated front panel protects the core against harsh elements while Polartec Power Grid Fleece with a gridded interior provides an exit for hot air and wicks moisture away from the body. A zippered chest pocket stores your phone or trail snacks and the slim cut makes it easy to layer without feeling bulky.

Explore the 2023 FREESKIER Buyer’s Guide