The Xero sleeping bag range are our lightest bags for the most serious minimalist users. The highest quality goose down is brought together with our lightest fabrics and EXL technology for uncompromising performance and the highest possible warmth-to-weight ratio. Amongst the lightest bags of their type in the world, the Xero range is the perfect choice for anyone who travels light and fast in difficult or remote environments. mountain-equipment.co.uk/the_gear/sleeping_bags/