The Ultralight Trail Running Essentials of 2015

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Barely-there accessories to help you go faster.
—Justin Nyberg

—Justin Nyberg
(Michael Karsh)
Black Diamond Distance Carbon Z poles
For stream crossings, talus traverses, and other challenging terrain, these ten-ounce collapsible poles ($160) are a godsend. The rest of the time, they’re so incredibly light that you’ll hardly notice that they’re stashed in your pack. blackdiamondequipment.com

(Michael Karsh)
Salomon S-Lab Adv Skin3 12Set pack
This smartly constructed pack ($185) can tote everything on this page securely (including the poles) and comes with two 500-milliliter front flasks and a handy safety blanket. salomon.com

(Michael Karsh)
Petzl Tikka R+ headlamp
While it feels a touch harsh on a bare brow, the 4.1-ounce Tikka ($80) is still our lightweight torch of choice for evening and dawn-patrol missions, thanks to its brilliant 170-lumen flood and the ingenious auto-dim feature when you point it at your feet. petzl.com

(Michael Karsh)
Outdoor Research Helium II jacket
This 6.4-ounce, highly packable waterproof shell ($125) is a minimalist bunker that offers serious squall protection without the weight penalty of everyday shells. outdoorresearch.com

(Michael Karsh)
The North Face Better Than Naked jacket
You can’t get a suppler soft shell than the four-ounce Better Than Naked ($130). It’s the perfect light-duty layer on mountain missions when temperatures won’t drop below freezing. thenorthface.com

(Michael Karsh)
The North Face Better Than Naked short-sleeve shirt
Soft polyester, welded seams, and rapid-dry panels on the back and under the pits make this our new favorite next-to-skin layer ($50). thenorthface.com

(Michael Karsh)
Patagonia Houdini pants
These water-resistant pants ($99) are insurance in case of downpours. Nice: snaps on the ankles for easy on and off. patagonia.com

(Michael Karsh)
Wigwam Rebel Fusion Quarter II socks
You can’t save much weight on socks, so go for comfort. The Rebel Fusion ($13) offers an inner liner of lofty olefin and an outer layer of nylon and merino. It wicks sweat and pads your feet for long miles. wigwam.com

(Michael Karsh)
Adidas Outdoor Terrex Agravic shorts
For those who choose not to rock microshorts (i.e., most of us) there are the Agravics ($110), which have a 9.5-inch inseam. Just as important, they’re made of Pertex Equilibrium, which means they dry almost instantly and weigh just 2.3 ounces. adidas.com

(Michael Karsh)