Northern Warmth Ultralight Bivvy Tent
Northern Warmth Ultralight Bivvy Tent
Free tracked UK delivery · 30 days to return · VAT included
Dispatch in 1–3 working days · UK delivery 7–14 working days · tracked from dispatch
A one-person tunnel tent that weighs less than a litre of water. It sits low, it goes up in about a minute with a single pole, and it packs to the size of a forearm — which is the whole point when you are carrying it up a hill rather than lifting it out of a car boot.
What the manufacturer states
- Pitched size: 220 × 90 × 50 cm
- Packed size: 40 cm long, 10 cm diameter
- Weight: 0.85 kg complete — tent, pole, pegs, guylines and bag
- Flysheet: polyester, PU3000 waterproof rating
- Groundsheet: 210D Oxford, PU4000 waterproof rating
- Pole: high-strength aviation aluminium
- Inner: mosquito mesh
- Sleeps: one
What PU3000 and PU4000 mean
The number is the height of a column of water, in millimetres, that the fabric holds back before it leaks. UK standards call anything above 1000 mm waterproof; 3000 on the fly and 4000 on the floor is a proper wet-weather rating, not a summer-festival one. We print it because it is the figure that decides whether you wake up dry.
Be honest about the size
This is a bivvy-shaped tent, 50 cm high at the peak. You lie down in it, you do not sit up in it, and there is room for you and a pack alongside — nothing more. If you want to sit up and change clothes, this is the wrong tent.
No temperature rating
A number we did not test is a number we will not print.
This bag has not been laboratory-tested to ISO 23537, so a comfort figure would be a guess dressed up as data. Across this price band you will find the same physical bag advertised as −10 °C by one shop and −20 °C by another.
Use the fill weight instead. It is measurable, it is on this page, and it compares directly against bags that have been tested.
Read our full position
Straight talk
It ships from our partners in Asia, and it is priced accordingly.
That is why the same specification costs less here than on the high street, and why it takes 7–14 working days instead of two. Tracked the whole way, taxes settled at checkout, nothing to pay at the door.
Finish the system
A bag is half of it.
Down compressed under your body loses almost all its loft, so the underside of the bag insulates you barely at all. Without a mat, the ground takes the heat.
The ground
Sleeping Mats
An air mat lifts you off cold, wet ground and takes the lumps out.
Shop mats
Our position
No Invented Numbers
Why you will not find a comfort temperature anywhere on this site.
Read our position
Not sure yet
Fill Guide
Which fill weight suits which night, and how to look after down.
Read the guide