About seventy percent of people are side sleepers, so NEMO designed a bag shape to accommodate this. Their Relaxed Spoon shape has extra room near the knees and elbows for shifting positions while you sleep, while still taking up less space in your pack than a traditional rectangular shaped bag. A pillow pocket to contain your jacket or pillow, a large blanket fold on the draft collar for a tucked in feeling, and a stash pocket for a phone means this bag was designed for a comforatble nights rest