The North Face's Exploration Convertible Pants are an ideal choice for exploring the outdoors when every gram counts, boasting a two-in-one that can be used as both trousers and shorts. Made from a stretchy but durable nylon-elastane mix these trousers/shorts stand up to day-after-day of wear and the challenges of steep switchback trails. Roll up the hem for mid-morning ventilation, then in the afternoon you'll be zipping them off mid-thigh, and when the evening comes convert them into trousers again. Plus, there's a storage pouch for keeping the zipped-off legs packed away. A water-repellent finish also makes quick work of light showers.