Men's Long Sleeve Tops

The Astroman Long Sleeve Sun Shirt is named after the legendary route in Yosemite Valley, featuring our best-selling lightweight, stretchy, and dur...

An incredibly warm merino wool base layer for the coldest months of the year, the Merino 260 Tech Long Sleeve Half Zip is a go-to piece for winter ...

A warmer, midweight version of our best-selling Oasis, the 260 Tech Long Sleeve Crewe is a go-to piece for winter layering, made with 100% merino w...

A classic plaid flannel shirt made with organic cotton and coconut buttons. Fit Regular Composition-52% organic cotton and 48% conven...

Our versatile, go-anywhere shirt made from breathable 100% merino wool jersey, the 200 Oasis Long Sleeve Crewe is our best-selling base layer top. ...

There’s no running from the LAW™. Our exclusive, cotton/tencel blend takes flannel comfort to a whole new level. Soft, durable, and warm, the LAW™ ...

Luxuriously soft, lightweight, and breathable, the DESCENDR™ Flannel is your go-to for all-day comfort and warmth. Our versatile, everyday design e...

Breathable climbing overshirt that works on and off the rock. Workwear inspired, the Cronin Cotton Stretch Overshirt is built for climbing. Durable...

The Echo Long Sleeve Tee is built from ultralight bluesign®-approved recycled materials, perfect for everything from fall running and spring ski to...

Lightweight, moisture-wicking long-sleeve tee for hard efforts in the mountains. Designed to handle the gamut of high-output mountain activities, t...

Our elevated Jeffreys Pique fabric takes on a new form in the Men’s Jeffreys Overshirt. Ideal for layering in cooler seasons, this lightweight flee...

A true farm-to-flannel, the Fjord Flannel Shirt is built from soft but durable 100% organic cotton. Designed for daily living and layering, it has ...

For days when you need a light layer, the Dolberg Flannel Shirt has you covered. The lightweight flannel is made from 100% organic cotton for added...

A lightweight and versatile merino mid layer ideal for high-intensity pursuits in cool to cold conditions, the Merino Blend 200 Realfleece™ Descend...

When you’re dreaming of snowy peaks, go find them in the Gondola View Long Sleeve Graphic Tee. Complete with UPF 40+ for hard-working sun protectio...

Built-in Mosquito Protection Technology (MPT) uses a chemical-free, engineered, tight-weave fabric that provides a robust barrier against mosquitos...

This longsleeve shirt is a perfect three season option. The fabric is a blend of hemp, recycled polyester, and organic cotton for softness and brea...

Ready for anything, the Canyonite Flannel Shirt is a daily-wear staple built of soft but durable 96% recycled polyester and 4% spandex for a touch ...

For backyard bonfire season, unplanned fishing trips, and every post-surf beach hang, this midweight flannel’s bound to be your most used shirt. 10...