The OZtrail TrekSmart 1 Season Sleeping Bag is part of the OZtrail Lightweight Series. This series offers a lightweight and compact carry size with no compromise on warmth and comfort. The ExoTherm Xt filling is made from ultra-fine microfibres, finer than silk. The result is an extremely light, highly compactable filling with exceptional insulation properties. This filling is encased in a highly durable, breathable dry touch Siltec lining. The outer is engineered to keep the cold and damp out while still allowing fresh air to circulate. The ExoTherm Xt filling provides down like warmth, without bulk, however unlike down, ExoTherm Xt still retains close to maximum warmth even when wet. The OZtrail Treksmart 1 Season Sleeping Bag features a mummy style construction, meaning it is designed to meet lower temperature ratings for the same pack weight and pack size. The mummy shape with its foot hugging design ensures that your sleeping bag fits you like a glove, thus minimising your body heat being wasted on heating unnecessary void space. The TrekSmart 1 Season has a small carry size, a minimum rating of 0C and is perfect for your next camping, hiking and other outdoor adventures! Weighing in at approx. 1kg, this sleeping bag is incredibly light. It has a sewn through construction to ensure the insulation fill is securely held in place, a full length auto lock zip which is fully adjustable to lock in any desired position and an integrated draft tube to prevent heat loss through the zipper teeth and so much more!