Complimentary U.S. shipping · No minimum order5–8 business days · 30-day returns

SunTherm™ M400 Synthetic Sleeping Bag 34°F / 1°C

$49.99

  • Washable & Durable: Made with 210T polyester pongee fabric and washable synthetic cotton filling, it’s easy to clean and maintains its softness even after repeated washing.
  • Breathable & Comfortable: The soft, skin-friendly lining and breathable fabric ensure a comfortable sleep, while the synthetic cotton filling provides excellent warmth and moisture resistance.
  • Versatile Design: Can be fully opened and used as a blanket for added comfort during warmer nights or zipped into a traditional sleeping bag for cooler conditions.
  • Spliceable for Double Use: Features side zippers that allow two sleeping bags to be joined together, creating a spacious double sleeping bag for couples or families.
  • Compact & Portable: Packs down to a compact size (ф20×43cm to ф28×45cm), making it easy to carry and store for outdoor adventures.
Free U.S. delivery · No order minimum
Processing: 1–3 business days
Estimated total delivery: 5–8 business days · 30-day returns
SKU: N15-10-5990C5A39871 Category:
A CLOSER LOOK

Made for your everyday.

Experience comfort and convenience with the M Series Washable Cotton Sleeping Bag by Naturehike. Designed for outdoor enthusiasts and home use alike, this sleeping bag combines soft, breathable fabrics with high-quality synthetic cotton filling to ensure a cozy and restful sleep. The fully openable design allows it to be used as a blanket for added versatility, while the washable construction makes it easy to clean and maintain. Whether you're camping, traveling, or enjoying a night indoors, the M Series Sleeping Bag is your perfect companion for all seasons.
Key Features:
Washable & Durable: Made with 210T polyester pongee fabric and washable synthetic cotton filling, it’s easy to clean and maintains its softness even after repeated washing.
Breathable & Comfortable: The soft, skin-friendly lining and breathable fabric ensure a comfortable sleep, while the synthetic cotton filling provides excellent warmth and moisture resistance.
Versatile Design: Can be fully opened and used as a blanket for added comfort during warmer nights or zipped into a traditional sleeping bag for cooler conditions.
Spliceable for Double Use: Features side zippers that allow two sleeping bags to be joined together, creating a spacious double sleeping bag for couples or families.
Compact & Portable: Packs down to a compact size (ф20×43cm to ф28×45cm), making it easy to carry and store for outdoor adventures.
Product Specifications:
Feature
M180
M300
M400
Fill Material
180g/m² Synthetic Cotton
300g/m² Synthetic Cotton
400g/m² Synthetic Cotton
Dimensions (Open)
(190+30) × 80 cm
(190+30) × 80 cm
(190+30) × 80 cm
Packed Size
ф20 × 43 cm
ф25 × 43 cm
ф28 × 45 cm
Weight
~1.2 kg
~1.5 kg
~1.85 kg
Fabric
210T Polyester Pongee
210T Polyester Pongee
210T Polyester Pongee
Lining
Washable Polyester
Washable Polyester
Washable Polyester
Colors
Pine Green, Rock Gray
Pine Green, Rock Gray
Pine Green, Rock Gray
Why Choose the M Series Sleeping Bag?
All-Season Comfort: Suitable for 3-4 seasons, providing warmth in cool weather and breathability in warmer conditions.
Easy to Clean: Machine washable (gentle cycle) for hassle-free maintenance and long-lasting freshness.
Versatile & Functional: The fully openable design and spliceable zippers make it adaptable for various uses, from solo camping to family trips.
Durable & Portable: High-quality materials and compact storage ensure durability and ease of transport.
The M Series Washable Cotton Sleeping Bag is the ultimate choice for those who value comfort, versatility, and ease of care. Whether you're exploring the outdoors or enjoying a cozy night at home, this sleeping bag ensures a warm and comfortable sleep experience.

Product specifications

Washable & DurableMade with 210T polyester pongee fabric and washable synthetic cotton filling, it’s easy to clean and maintains its softness even after repeated washing.
Breathable & ComfortableThe soft, skin-friendly lining and breathable fabric ensure a comfortable sleep, while the synthetic cotton filling provides excellent warmth and moisture resistance.
Versatile DesignCan be fully opened and used as a blanket for added comfort during warmer nights or zipped into a traditional sleeping bag for cooler conditions.
Spliceable for Double UseFeatures side zippers that allow two sleeping bags to be joined together, creating a spacious double sleeping bag for couples or families.
Compact & PortablePacks down to a compact size (ф20×43cm to ф28×45cm), making it easy to carry and store for outdoor adventures.
All-Season ComfortSuitable for 3-4 seasons, providing warmth in cool weather and breathability in warmer conditions.
Easy to CleanMachine washable (gentle cycle) for hassle-free maintenance and long-lasting freshness.
Versatile & FunctionalThe fully openable design and spliceable zippers make it adaptable for various uses, from solo camping to family trips.
Durable & PortableHigh-quality materials and compact storage ensure durability and ease of transport.
FeatureM180; M300; M400
Fill Material180g/m² Synthetic Cotton; 300g/m² Synthetic Cotton; 400g/m² Synthetic Cotton
Dimensions (Open)(190+30) × 80 cm; (190+30) × 80 cm; (190+30) × 80 cm
Packed Sizeф20 × 43 cm; ф25 × 43 cm; ф28 × 45 cm
Weight~1.2 kg; ~1.5 kg; ~1.85 kg
Fabric210T Polyester Pongee; 210T Polyester Pongee; 210T Polyester Pongee
LiningWashable Polyester; Washable Polyester; Washable Polyester
ColorsGray, Green
BrandNaturehike official store
MaterialsFill Material: 180g/m² Synthetic Cotton; 300g/m² Synthetic Cotton; 400g/m² Synthetic Cotton; Fabric: 210T Polyester Pongee; 210T Polyester Pongee; 210T Polyester Pongee

Additional information

Weight N/A
Color

Gray, Green

Opening

Right, Left

Choosing, using and caring for your product

Plan around the conditions you expect and the space you need. Compare actual shelter dimensions, sleeping specifications and packed size; prepare appropriately for weather and terrain.

Read the instructions supplied with your item before first use. Check the components and fitting requirements, and follow the care guidance for the listed materials. Keep the product instructions for future reference.

If a specification is not listed or you need help with a particular application, contact our team before ordering.

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A few helpful answers

Where do you deliver?

We deliver within the United States. Standard U.S. shipping is free, with no minimum order amount.

When should I expect my order?

Order processing takes 1–3 business days. Estimated total delivery is 5–8 business days from order placement, including processing and carrier transit. See our Shipping Policy for delivery details and how to contact us about an order.

Can I return an item?

You can request a return within 30 days after delivery. Contact us before returning an item so we can provide the correct instructions. Approved refunds are expected to reach the original payment account within 2–4 business days after approval and issuance. See the Return & Refund Policy for the full conditions.

How do I choose the right option?

Check the product photographs, dimensions, materials and available options. Choose your color, size or specification before adding the item to your cart. If you are unsure, ask our team before ordering.

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