The North Face Women's Calentito 2 Jacket is a light jacket for mild, slightly windy weather on the trail. TNF™ Apex Universal fabric has a wind permeability rating of 5-10 CFM, where 0 CFM is 100% windproof. The fleece backer on the inside is warm and soft against the skin, while the outside is tough and treated with a durable water repellent finish for light rain resistance. A touch of elastane has been blended into the fabric for stretch, so you can slip into your pack straps and move your arms freely. The zippered hand pockets are great for hanging onto small baggies of trail mix as you walk. The hem has a cinch cord and a snap at the collar to keep the wind drafts blocked.