New for 2019, the Nitestar Alpha 250S has improved by condensing its pack size by using Alpha insulation which is a lot more compressible. The Alpha insulation is lightweight and extra warm to keep you cosy at night, while the microfiber lining will provide added comfort. The Polair diamond shell provides a strong and lightweight shell which makes it easy to transport in the 4-strap compression stuffsack.Duke of Edinburgh recommended kitOff-set double layer constructionAlpha insulationPolair diamond shell3 SeasonMicrofiber liningTwo-way auto lock zipMummy shaped sleeping bag4-strap compression stuffsackInsulated zip baffleInternal pocketPacksize 29cm X 20cm