"Weather in the mountains can change quick, but you also don't want to have heavyweight items to lug around," Basham said. "Find a lightweight, water- and windproof jacket that packs into your pocket or hydration vest. I use the Rabbit Swish Jacket ($84, originally $120) on hotter, more clear days and the new Rabbit Swish Jacket on colder, more wet days."
While the Swish isn't available until October, Basham noted it's water-resistant and made of recycled coffee grounds — how cool!