Wild country mistral 450 sleeping bag description the mistral range of synthetic sleeping bags has been designed for those looking for reliable gear within a budgetthe mistral 450 is for spring and summer use and suitable for d of e and scout and guide use to keep out the draughts the sleeping bag has been fitted with locking zip sliders to keep the zip in place and prevent it from creeping open during the night shoulder baffles help to retain warmth and theres also a drawcord closure