Best Hiking Gear: 12 Cool-Weather Essentials

The North Face Havoc Short Sleeve Shirt

With this crew's lightweight fabric and loose fit, you'll score optimal upper body movement for those intense altitude climbs. The shirt acts like a second skin, providing breathable temp-regulation all the way to the top of the mountain, and the flat-locked stitching prevents annoying chaffing from those sometimes-uncomfortable backpack straps.

($50, thenorthface.com)