The OZtrail MicroSmart 270 Sleeping Bag – Junior 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.