I lift, got an XL and it fits amazing. Took this and the Obsidian pants to the blind and both held up in the cold and were perfect once it got warmer. Highly recommend!

I bought a good chunk of First Lite gear, having only heard great things about it but had never used it. I’m a whitetail/duck/turkey hunter in Alabama, and recently went on a last minute early season teal hunt. The Fuse Quarter ZIP was the only shirt I had on me to wear, even though it was 82 degrees at 5 am...I thought I’d be sweating, but this thing kept me surprisingly cool. I’m flat out impressed, because I’m always hot. Looking forward to wearing it as an outer layer in early bow season and as a base layer once it gets colder.

Great for base layer with an insulated outer shell. Can comfortably hike in the 40s with just this as a top. When stationary, using this as a base layer keeps me very warm. Love the thumb loops. Zipper is comfortable, fits perfectly. Great addition to my Fusion camo collection!

I sized up on this product. Athletic build with big shoulders. I had the older lightweight zip in Large and it was a tad small and when I ordered new stuff I sized up with XL. I love this fit much better. Its also longer. I use it for every style of hunting.

I rocked the Fuse over my wicks short sleeve or wicks hoodie the last weekend in September and into October during archery season in Montana. I usually only wore it during the first hike of the morning and would strip it off after that. Great second layer in a full system if you are doing any glassing or tree stand action. The sleeves were a bit long but I didn’t see any effect on my shooting.

I was looking for something that I could use for Spring Turkey, Summer Scouting, and Early Whitetail. This will be the shirt for all of those! I took it out scouting for turkey and it was about 50 and windy when we first started and got up to about 75 and sunny by time we were done. I never got cool or overheated. If I started to warm up I just unzipped for a few minutes and was good to go. This is a very versatile piece. I will be buying another Fuse top!

After having all of my buddies tell me about first lite and merino wool I decided to give it a shot. Honestly, I thought that for $100 this shirt better blow me away....well, it did. It was the only thing I had on while shed hunting in CA. We started the day at 40 degrees and ended at 80. It kept me perfectly comfortable the entire time....I couldn't believe it. Can't wait to get more.

I am very excited to get this out in the field. The fit is great, super lightweight, and very breathable. Looks like a winner.

My favorite shirt hands down. The most comfortable shirt I've ever had. I'm amazed at how well it regulates my temperature, cool in the summer and warm in the winter. Keeps me comfortable in western WA. Probably the most versatile product First Lite has. I love it.

Awesome base layer. I own both the Fuse Quarter Zip and Fuse Crew and have been extremely impressed with their performance and versatility.