Mountain Hardwear Men's Butter Up Long Sleeve – UPF 50 Sun Shirt with Moisture Wicking

Spent six hours on the water in this thing and not a hint of burn through the fabric. It dries almost instantly when you splash it and never gets that heavy soaked feeling. The fabric genuinely doesn't stink after a full day, which is more than I can say for my other sun shirts.

Wears cool, blocks sun, doesn't stink. I own three now.

The Butter Up fabric is softer than most UPF shirts I've owned and the wicking is legit on sweaty climbs. Fit is athletic but not restrictive, and the sleeves stay put. Wish it had a chest pocket for my phone. For $22.50 it's an easy yes and I'll probably buy more colors.

Comparable to sun shirts I've paid $50+ for. Light, breathable, and the UPF rating gives me peace of mind as a fair-skinned redhead.

Fabric and sun protection are excellent but the torso length is longer than I expected. Fine if you're tall, a bit droopy if you're not.

Wore this in Moab for three days of climbing in 90-degree sun. Stayed comfortable, no burn, and it rinsed out in a sink and dried overnight.

Anti-odor treatment really works — I did a two-night trip with one shirt and nobody complained. The collar took a few washes to soften up. Wicking is fast and the fabric feels durable against rock. Happy with the purchase.

Hood-less design is what I prefer, and the cuffs are long enough to cover the back of my hands. Perfect for long days on the lake.

Comfortable and breathable, but the fabric caught on granite and pulled a thread within two wears. Maybe I'm rough on gear, but I expected more durability.