Just 680 g. Ultra-lightweight with deuter SL Lite comfort for speed ski touring: good ventilation, ergonomic hip fins and shoulder straps with a detachable sternum strap and foam back pad (removable) combine to create a snug fit with zero load wobble. An adjustable quick-fix diagonal ski attachment system with a sliding loop that fits round the ski ends and a bungee cord that wraps round the tips and secures to a hook on the shoulder strap gives the Updays quick and easy handling. An easy-access bottom compartment also makes it quick to get at skins, ski crampons or climbing crampons, without having to take the pack off. This is a Climate Partner certified product.