Features: Relaxed Spoon(R) shape for comfortable side sleeping 100% recycled synthetic Stratofiber(TM) insulation for warmth, moisture resistance, and packability Blanket Fold(TM) external draft collar for tucked-in comfort and temperature regulation Integrated pillow pocket for stuffing a jacket, extra clothes, or Fillo(TM) Zipper plow hardware for a snagless zip Opposite-sided zippers on men's and women's models allow two bags to zip together Protected by the NEMO Adventure Forever Guarantee(TM) Patent # D804,780 (additional patents pending) Storage: Integrated pillow pocket for convenient storage of clothing or a pillow insert SPECS: Spoon(R) shape with roomy elbow and knee areas Designed for packability and moisture resistance Compatible with opposite-zip Tempo models for creating a double sleeping bag