**Product Specifications:**

**Brand:** NatureHike

**Model:** M Series Envelope Hooded Sleeping Bag

**Description:** NatureHike sleeping bags are designed to provide a comfortable and soft sleeping experience, allowing users to easily return to nature and enjoy a restful sleep. The M Series sleeping bags come with a hood and are recommended for outdoor activities.

**Features:**

1. IMPAQ and MA safety certification reports ensure the high quality of the synthetic down filling, categorized as Class B for safety.

2. Skin-friendly fabric with certification for low formaldehyde content, tested according to GB/T2912.1-2009 standards.

3. U-shaped windproof hood to protect the head from cold air.

**Additional Information:**

- The sleeping bag can be easily converted into a double sleeping bag by joining two bags together.

- Machine washable in gentle mode, ensuring easy maintenance.

- Water-resistant and quick-drying properties for convenience during outdoor use.

- Comes with a built-in storage bag for easy portability.

- Vacuum-compressed packaging for cleanliness and dryness during transportation.

**Basic Parameters:**

- **Color:** Pine Green

- **Fillings:**

- M180: 180g/m² synthetic down

- M300: 300g/m² synthetic down

- M400: 400g/m² synthetic down

- **Weight and Storage Size:**

- M180: Approx. 1.2kg, Φ20*43cm

- M300: Approx. 1.5kg, Φ25*43cm

- M400: Approx. 1.85kg, Φ28*45cm

- **Size and Fabric:**

- Dimensions: (190+30)*80cm

- Fabric: 210T Chun Yarn

**Temperature Ratings:**

- M180: Comfort Temperature 12°C, Extreme Temperature -8°C

- M300: Comfort Temperature 6°C, Extreme Temperature -13°C

- M400: Comfort Temperature 10°C, Extreme Temperature -18°C

**Product Dimensions:** 80cm x 220cm

**Usage Instructions:**

1. Unzip the left and right sleeping bags.

2. Connect the two zippers and fasten the snaps to create a double sleeping bag.

3. Follow the steps to combine the sleeping bags for dual use.

*Note: All measurements are approximate and may vary slightly due to manual measurement. Please refer to the actual product for precise details. Measurements are in centimeters (cm).*