Kept me dry in a heavy downpour and they are so small I can pack them along just in case.

– Kevin K., ★★★★★

Master the elements with the Men’s Vertice Rain Pants. Gone are the days of getting soaked with hot, humid and unventilated rain gear. Our Vertice Rain Gear Collection is optimized to be lightweight without compromising on durability, or breathability, and it is among the lightest possible choices for waterproof hyper-breathable rain gear.

Also available in Women's Sizes.

They do what they’re supposed to do without adding hardly any weight. For any item so useful when needed this is the best option I’ve found. Thank you.

– Cristina R., ★★★★★

Stay dry during those grueling climbs in the rain with the Women’s Vertice Pants. Gone are the days of hot, humid, and unventilated rain gear. Our Vertice fabric is optimized to be lightweight without compromising on durability, or breathability, and it is among the lightest possible choices for waterproof hyper-breathable rain gear.

Also available in Men's Sizes.

Be sure to check out the rest of our Vertice Rain Gear.

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.

Engineered for outdoor versatility, the ultralight Octa® Camp Pants are crafted with Octa® fleece that offers durability, breathability, and a superior warmth-to-weight ratio. They are excellent as sleep pants, while also doubling as a base layer under backpacking pants or shorts.

A soft, cozy interior ensures all-day comfort, while the tapered design and gusseted crotch provide a streamlined fit that layers easily under pants or hiking shorts. Deep front pockets keep your essentials close, whether you’re on the trail or lounging at camp.

*The length has been increased and is in effect across all sizes as of November 2025 thanks to feedback.

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

Zpacks Octa® Fleece Thermal Bottoms beat the warmth and weight of all other long underwear in their class. Designed to be worn under your hiking pants in frigid weather, under shorts in cool weather, or worn as an ultralight sleep layer, these leggings are unmatched when ounces count.

Octa® Fleece features a soft, fluffy interior that traps warmth and keeps you cozy, and an abrasion-resistant exterior that withstands wear and tear.

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

Perfect for the summer rain. Nice and light for warmer rains, and the zipper gives more room for a longer stride and some extra circulation.

– Jennifer S., ★★★★★

When the rain begins to fall and the trail becomes a river, our Dyneema® Composite Fabric Rain Kilt offers a unique solution that keeps you dry while providing ample ventilation in warm weather storms. A great option for ultralight waist to knee rain protection, the DCF Rain Kilt works great when combined with our Vertice Rain Jacket or Groundsheet Poncho. Also available in a Waterproof Breathable Material version.

If you're not into a kilt but still into staying dry, Check out the rest of our Rain Gear.

The kilt packs down to nothing and very very light weight. Far better than carrying rain trousers at 5 times plus for weight. The kilt is very easy to use quickly and no need to take boots off. A great idea that keeps you dry with good quality materials and finish. Arrived quickly when ordered.

– Ian M., ★★★★★

The Vertice Kilt is a unique solution to staying cool in warm weather storms, and is a great option for ultralight waist to knee rain protection. It can also be worn as a stand alone item on laundry day. The Vertice Rain Kilt works great when combined with our Vertice Rain Jacket or Groundsheet Poncho.

Also available in a lighter weight Dyneema Composite Fabric DCF Rain Kilt version.

If you're not into a kilt but still into staying dry, check out the rest of our Rain Gear.