The North Face Summit Series Altimetro LT IKB Long-Sleeve Trail Running Top

Light and engineered with a generous amount of stretch that ensures a full range of motion, the Summit Altimetro LT IKB Long-Sleeve Top is specifically designed to meet the weight requirements of cold-weather mandatory race kits.

Take it to the next level in the Summit Altimetro IKB Top. It leverages The North Face's DotKnit technology, using hydrophobic inner yarns, hydrophilic outer yarns and engineered holes to pull moisture from the skin and expel it to the outside. Coupled with FlashDry-Pro on the back panel that wicks moisture lightning fast, you'll stay dry and comfortable when navigating hiking trails in any weather. The body-mapped fabric reduces weight and increases comfort with a backpack, too, leaving you free to focus on what's in front of you, not what's behind. Summit Series layers all work together for optimum performance in terms of breathability, insulation, weather resistance and moisture management.