Insulite Superfine insulation - compressible, durable and light Its fleece lined stuff sack doubles up as a handy pillow, and the two panel 3D hood and insulated zip baffle really locks in warmth. Ventilation isn't a problem either - the zip extends all around the foot section, allowing you to adapt when the temperature rises. With a seriously comfy Polair Silky, soft-touch material with an antibacterial, insect-repellent finish, not to mention head and foot mosquito nets, this is a perfect bag for longer trips and shorter stays, whatever the environment._Insulite Superfine insulation - a blend of spiralised, siliconised fibres, which combine to produce a highly compressible, extremely durable and lightweight filling Loose shell - Reduces cold spots to keep you warmer at night Diamond polyester ripstop shell Soft to the touch, Polair Silky gives a level of comfort that is hugely beneficial after a long day's trekking ... More info