The uniquely designed Cobra 400 provides an exceptionally lightweight choice for trekking or fast-paced adventures where minimal packing is essential. Engineered with ergonomic considerations, the Cobra 400 wraps around your head and shoulders, enhancing heat retention for increased warmth. Its 20D 380T Nylon Outer Shell fabric not only adds durability but also features water-resistant properties, contributing to its long-lasting performance. Additionally, the Cobra benefits from Thermal Reverb technology, effectively radiating your body heat to maximise warmth and overall comfort during your outdoor pursuits. Vango Cobra Sleeping Bag | George Fisher