TentBox Sleeping Bag


Our high-performance sleeping bag fits perfectly inside all TentBox models and has an ‘extreme’ temperature rating of -11°C. Fully unzip it to turn it into a large blanket, or connect two of them together to create a double sleeping bag. The 100% cotton liner means it’s super soft and the nylon outer shell is both hardwearing and easy to clean. It comes with a stuff sack for easy storage.

If you purchase two, you can connect them together to make a double sleeping bag. 


  • 4-season rating: A comfort rating of 5°C and an extreme rating of -11°C
  • 100% cotton flannel lining: super soft brushed cotton for a comfortable night sleep
  • Rectangular design: stretch out while you sleep
  • Internal pocket: perfect for your phone or precious belongings
  • Double-up compatible: connect two together to create a cosy double sleeping bag
  • Wraparound foot box zip: Allows the bag to lie flat to use as a mattress topper, blanket or duvet
  • Strap-down stuff sack: Included for easy and secure packing, ensuring a compact and organised storage solution

What’s included?

  • TentBox Sleeping Bag
  • Sleeping Bag Stuff Sack


  • Shell: 100% nylon
  • Lining: 100% cotton (flannel for added comfort)
  • Filling: 100% polyester
  • Stuff sack: 210D/P Oxford PU450MM
  • Stuff sack orange panel layer: 50D 300T/P Cire Fibre WR Proof


  • Comfort: 5°C (general rating to ensure warmth)
  • Up to Limit: -5°C (feel the cold but within reasonable limits)
  • Extreme: -11°C (survival temperature, ensuring safety in harsh conditions)
  • Closed: 190cm x 86cm
  • Spread out fully: 190cm x 172cm
  • In bag: 50cm x 25cm