Features: Our sleeping bag suits almost all seasons. Tighten the rope when feeling cold, to enhanced warmth. Pull off the foot area zippers when feeling hot, it can improve air permeability, adjust to what you like. Summer type comfort temperature over 25℃, spring autumn type comfort temperature about 10℃~20℃, winter type comfort temperature about 0~5℃~10℃. This sleeping bag has its own compression bag, which has two tightable strips. Press bag and fixed by two strips, the volume will reduce 2 times than before. After compression, sleeping bag can put in backpack or hangs on backpack suspension system. Lightweight and practical structure, easy to carry and can be used for a long time. Easy to detach, easy to be cleaned and wash.