I love the Black Diamond Coefficient hoody. It's the versatility and fit that sets it apart from other choices in my gear bag. It shines as casual wear in town and it transitions as a must-have for a day of climbing or ski touring. We all have some clothes we seem to always grab first...well, that's the Black Diamond Coefficient hoodie for me. It is my go-to piece for a day in the mountains! Super comfortable, looks good and works with me on tough terrain! Early versions had some issues with the zippers breaking (twice in the same spot) but Black Diamond took care of that and replaced the jacket both times! Even with the zipper issue I still give the co- efficient 5/5 stars. Two thumbs up from me! Most important...Since this zipper issue,... Black Diamond has re-designed the flaw and added a much stronger zipper.