Featuring advanced Polartec insulation, the Glacier Delta Full Zip features insulating properties to maximise warmth & reduce heat loss in the coldest temperatures, keeping you toasty & comfortable throughout your hike. The North Face have included a full zip construction for ventilation, giving you a cool blast of air when you work up a sweat. Everybody loves that rare glimpse of autumn sun & warmth & to promote this, The North Face have created the Glacier Delta Full Zup with UPF30 sun protection, allowing you to enjoy every moment before the cold nights draw in. Additional features include a secure zip sleeve for valuables & elastic binding at the cuffs.