Comfort Female: -8.8°C Comfort Limit Men: -15°C Extreme: -35°C The Defence 4 is the most popular and best-selling all-round sleeping bag with excellent weight to stuff size and performance ratio. It is a well-established, 3-season sleeping bag that has proven to be 100% reliable on cold nights both in the wilderness and in snow caves. A protection flap on the outer side of the zipper keeps out wind and wetness. The outer shell is a super-light, highly resistant, microfibre nylon with a fine microporous coating which makes it water-repellent. There is a generous draft tube on the inside of the zipper to prevent heat loss at the zipper. G-LOFT ISO+ FILLING; Manufactured from high-quality bi-component polymers, the structure of G-LOFT insulation is in fact similar in many ways to high-quality goose down. The 3-dimensional crimping ensures maximum resilience and loft. DIFFERENTIAL CUT; Even when the sleeper moves about compressing the inner layer of insulation, the sleeping bags warmth is