The U Series covers five temperature ratings from 11 °C down to −3 °C comfort, so you can pick the bag that matches the conditions you actually camp in rather than over- or under-buying. All five carry full EN ratings, and all five have a draft collar and a full-length draft tube behind the zip, which is where most synthetic bags leak heat.
Best for
Campers who want a specific temperature rating and the durability of a synthetic fill, which handles damp better than down and washes at home.
Not ideal for
Hiking where weight is critical. These run from 1.1 kg to 1.7 kg, so a down bag saves considerable weight for the same warmth.
Additional features
- Water-repellent outer fabric handles condensation and contact with a wet tent wall
- Hood adds 30 cm above the 190 cm body length
- Two fill types: hollow fibre, and a microfibre that gives more warmth for the same weight
- Zip opens fully so the bag lies flat as a quilt
Product Specifications
Models available, warmest last
U150 / U250 / U350 / U250s / U350s
Shape
Rectangular with hood
Temperature ratings and seasons
U150 — Comfort 11 °C, Limit 7 °C, Extreme −6 °C. Summer
U250 — Comfort 6 °C, Limit 3 °C, Extreme −10 °C. 3-Season
U350 — Comfort 1 °C, Limit −2 °C, Extreme −13 °C. 3-Season
U250s — Comfort 0 °C, Limit −3 °C, Extreme −14 °C. 3-Season
U350s — Comfort −3 °C, Limit −6 °C, Extreme −17 °C. 4-Season
Dimensions
Body: 190 × 75 cm
Hood: additional 30 cm
Total length: 220 cm
Packed size
U150: 43 × ø22 cm
U250 and U250s: 43 × ø25 cm
U350 and U350s: 44 × ø27 cm
Weight
U150: ±1,100 g
U250 and U250s: ±1,500 g
U350 and U350s: ±1,700 g
Zip
Opens fully to lie flat. Two bags can be connected, subject to matching zips being in stock
Enjoy free standard shipping on orders of R1999 or more anywhere in South Africa. For delivery options, timelines, and regional details, please refer to our full shipping policy.
If something isn’t quite right, you can return unused items within 10 days of delivery, provided they meet our returns criteria. Full details are available in our returns policy.
Warranty
We stand behind the quality of our gear.
All Naturehike products are covered by a 1-year warranty against factory defects, giving you peace of mind on every adventure. If you experience an issue, you can log a warranty or return request here →
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4.7 / 5
Customer Reviews
Overall rating: 4.7 / 5 from 29 reviews.
We tented in Sutherland in June. It was pretty cold.
The sleeping bag was excellent, kept me warm.
I know for cold conditions a sleeping bag should fit you snuggly but my only caution to big guys is the width of the bag. It is 750mm, so consider that when thinking about purchasing this bag. Shoulder and chest space was very snug. I could still move to my sides or back. Length and leg space is good. I'm 1.8m.
Store owner replied:
Thanks for the great feedback! We're glad the bag kept you warm in Sutherland. Good point on the width; for broader campers, a roomier fit may be preferred. We appreciate you sharing this for others to consider!
Good price for what the product is. Going winter hiking with it in Drakensberg in a few weeks. Going to be a good fire (or ice) test.
This is a very nice sleeping bag. My wife used it for our camping trip over the long weekend. Was very comfortable and she was cold at all.
Can also confirm this to be very high quality.
This is a very good option that will not break the bank
Store owner replied:
Thanks, Janus! We're thrilled to hear your wife stayed warm and comfortable. Enjoy many more camping adventures together! ⛺😊
Absolutely amazing sleeping bag. Quite big, so difficult to pack for a hiking experience.
But i did not freeze kn ebit on the top of the Drakensberg when the people around me apparently did.
Store owner replied:
Hey,
We're delighted to hear you love the colour of your new U Series Sleeping Bag and are very happy with your purchase! We also appreciate your feedback regarding the fabric's finish.
Your insights are valuable as we continuously strive to enhance the comfort and aesthetic of our outdoor gear.
Thanks again for sharing your experience and we hope you enjoy many adventures with it.
Perfect for camping. Love the full zip. Heat control very well with cotton inner.
Store owner replied:
Thank you, Anelia! We’re so happy to hear you’re impressed with the quality. Enjoy trying it out, and happy camping!
Don’t get me wrong, this sleeping bag really did the trick and kept me really warm whilst volunteering at MacMac Ultra this year. And it was fluffing cold too. However, if I understood correctly, it is meant to be a sleeping bag that can double up in to a double sleeping bag with adding another, I for some reason am not sure how to do that or even fully open the sleeping bag to lay it flat
Store owner replied:
Thanks for the feedback, Feldon! Glad you're enjoying the comfort — and we appreciate the note on the zipper, we'll definitely take that into account.
