Shield yourself from the fierce summer sun and feel the breeze with the Trail Cool Sun Hoody. Constructed with a comfortable and stretchy ultralight UPF 40+ fabric, our technical hoody is engineered to keep you cool while providing maximum sun protection.

Featuring a loose fit billowing hood and quarter-length opening for air flow, the Trail Cool Sun Hoody was built to let you breathe in the backcountry.

Check out the rest of our Trail Cool collection to discover our full lineup of breathable UL clothing.

Shield yourself from summer sun and feel the breeze with the Trail Cool T-Shirt. This short-sleeve top is crafted from soft, stretchy, ultralight UPF 40+ fabric, providing breathable coverage and fast-drying comfort for long-distance hikers and trail runners who log big miles in the heat.

Our Trail Cool polyester fabric is designed to let the air through and pack down tiny. A spare t-shirt doesn't add much weight or bulk to your backpack, gym bag, or travel kit.

This t-shirt runs a little bit long and loose which is good for air flow and coverage. Size down if you are typically between sizes.

Check out the rest of our Trail Cool collection to discover our full lineup of breathable UL clothing.

Technical gear isn’t just for your pack. Every aspect of our Trail Cool Hiking Shorts was designed to meet the rigorous demands of thru-hikers, backpackers, and outdoor enthusiasts.

Constructed with premium Toray PrimeFlex™ fabric, these shorts are designed with long-term durability and mobility in mind. The articulated cut and 4-way stretch mean you’ll feel free to take on miles of rugged terrain with zero restrictions. Whether you wear them backpacking, running, or as ultralight swim shorts the Zpacks Trail Cool Shorts have you covered.

Check out the rest of our Trail Cool collection to discover our full lineup of breathable UL clothing.

Technical gear isn’t just for your pack; it belongs in your everyday kit too. Our Trail Cool Joggers are built with cutting-edge Japanese tech Toray PrimeFlex™ fabric, designed to keep up with thru-hikes, overnighters, trail runs, and city adventures alike.

They’re crazy durable, super breathable, and move with you thanks to an articulated cut and 4-way stretch that feels like a second skin. Whether you're grinding out big miles or grabbing post-trail tacos, these joggers bring next-level versatility with zero compromises.

Check out the rest of our Trail Cool collection to discover our full lineup of breathable UL clothing.

They are really comfortable, true to size, and really help with keeping your feet cool on a hike.

– Debbie L., ★★★★★

Prevent blisters and let your feet breathe with our Zpacks Trail Cool Socks. Enjoy the same performance elite athletes have come to expect in other sports with an ultralight hiking sock that's comfortable, breathable, and dries in minutes.

Check out the rest of our Trail Cool collection to discover our full lineup of breathable UL clothing.

From alpine ascents to campsite relaxation, the ultralight Octa® Fleece Hoody redefines what a fleece can do. Built with advanced Octa® fleece, it delivers exceptional durability, breathability, and a warmth-to-weight ratio that’s hard to beat.

Featuring a soft, fluffy interior for unmatched comfort, a half-zip for quick temperature control, and a fitted hood to lock out the cold the Octa® Fleece Hoody is designed for performance and versatility.

The spacious kangaroo pocket is perfectly positioned for use with a backpack belt, keeping essentials or trail snacks within easy reach.

Also available in a full-zip version.

Check out the rest of our Octa® Fleece Collection here.

From alpine ascents to nights around the campfire, the ultralight Women’s Octa® Fleece Hoody is designed to move with you and keep you looking great while doing it. Designed with a women's cut and offered in colors that flatter, this ultralight layer keeps you cute, confident, and comfortable wherever the trail leads.

Made with advanced Octa® fleece, it delivers exceptional durability, breathability, and a warmth-to-weight ratio that’s hard to beat. This pullover is designed for performance and versatility, featuring a soft, fluffy interior for unmatched comfort, a half-zip for quick temperature control, and a fitted hood to lock out the cold.

The spacious kangaroo pocket is perfectly positioned for access with a backpack belt on, keeping your hands warm and essentials within easy reach.

The Women’s Octa® Fleece Hoody is the go-to fleece you’ll reach for on every adventure.

Also available in a full-zip version. Check out the rest of our Octa® Fleece Collection here.

From alpine ascents to campsite relaxation, the ultralight Octa® Fleece Hoody redefines what a fleece can do. Built with advanced Octa® fleece, it delivers exceptional durability, breathability, and a warmth-to-weight ratio that’s hard to beat.

Featuring a soft, fluffy interior for unmatched comfort, a full-length zipper for easy layering and precise temperature control, and a fitted hood to lock out the cold, the Octa® Fleece Hoody is designed for performance and versatility.

The spacious kangaroo style hand pockets are perfectly positioned for use with a backpack belt, keeping essentials or trail snacks within easy reach.

Also available in a half-zip pullover version.

Check out the rest of our Octa® Fleece Collection here.

From summit pushes to starlit campfires the ultralight Women's Full Zip Octa Fleece Hoody is made for women who move with purpose. designed a flattering feminine fit and colors that inspire confidence this high-performance layer keeps you warm comfortable ready whatever adventure comes next.

Built with advanced Octa® fleece, it offers an unbeatable balance of durability, breathability, and warmth without the weight. The soft, airy interior feels luxurious against your skin, while the full-zip design gives you instant control over temperature and comfort. A fitted hood provides extra protection when the weather turns cool.

Thoughtful details like roomy hand pockets that stay accessible beneath a backpack belt ensure you can warm your hands or stash essentials with ease. Whether you’re climbing high or unwinding fireside, this fleece is made to move with you every step of the way.

Also available in a slightly lighter Pullover version. Check out the rest of our Octa® Fleece Collection.

Amazingly light but cuts the wind and holds the heat in with a layer underneath!

– Joe B., ★★★★★

The right layer can make all the difference. That's why the Ventum Wind Shell is purpose-built for those moments when a base layer alone isn’t enough, but an insulated jacket would be overkill.

A whisper-light layer that blocks the bite of the wind while staying highly breathable on the move, the Ventum Wind Shell starts at just under 2 ounces and disappears into your pack until you need it. 

Pairs well with an Octa Fleece Hoody to cut the wind and trap in warmth. Ounce for ounce the Ventum Wind Shell has the best warmth to weight ratio of anything we sell.

Whether you’re logging miles on a thru-hike or pushing big days in unpredictable weather, the Ventum Wind Shell keeps you focused on the journey, not your layers.

When I tried on the prototype of this jacket at Trail Days in Damascus earlier this year, I knew I’d be getting one! I think my search for the perfect backpacking jacket is finally over! Bonus that it matches my Zpacks full zip sleeping bag! Zpacks does not disappoint. Just get one.

– Jennifer B., ★★★★★

When those cold nights in the backcountry hit, stay warm and cozy with the Zpacks Down Jacket. Striking the perfect balance of warmth and weight,​ our ultralight down jacket is the go-to insulated layer for outdoor adventurers looking to beat the chill at an unbeatable weight!