Primaloft is a synthetic insulation that is thermally efficient, with superior water resistance, dries faster than down, is breathable and is as warm soft and compressible as down. The Photon is a great alternative to a traditional down jacket with an unbeatable price point, plus a sporty two-tone colour combination to produce a more fitted appearance. The Photon features a Pertex Microlight 30D outer shell (ideal for flying) with 133g Primaloft Eco in the body and 100g in the sleeves. Other features include, a grown-on hood with 60g Primaloft insulation and wired peak, two zipped A-line chest pockets, zipped internal chest pocket, adjustable Velcro cuffs, double exit hem drawcord, full-length one-way YKK zip with internal insulated baffle. Packs downs into the chest pocket. Weight: 520g/18oz.