This is ultimate full-length racing bivvy for expedition racers who want to save grams but are still serious about getting quality sleep mid-race. Made from a highly water resistant and ultra-breathable, technically advanced material, this bivvy has no pretences about what it’s for: racing.


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At a featherweight 169g you’d be forgiven for thinking it’s one of those short bivvies that only takes you up to your armpits, but you’d be wrong! It’s the longest RADBAG at 220cm long 😊, allowing even the tallest people to pull it right over their heads, pull the drawcord closed and slip into the blissful oblivion of sleep.

The reason for the length is born from the inspiration behind its invention: in 2018 at Expedition Africa, a racer got separated from his team, lost in the dark and mist, and miraculously survived a cold night out by wiggling his entire body in the foetus position inside his stretchy tee, with only the top of his buff-adorned head sticking out, letting his breathe warm the space inside.

The RADBAG Race works on the same principle: you close it over your head (hence the length) and your breathe helps warm the volume inside, while the highly breathable and insulative material prevents condensation building up inside. All this while being extremely water resistant (850mm water column), keeping the windchill off you and keeping those ants away from the energy bar now squashed in your pocket.

When you’ve had your 30 minute powernap and are ready to race hard once again, simply stow your RADBAG into its own attached correctly sized stuffing bag and off you go. No time wasted looking for the bag in the dark or trying to stuff it into an overly compact bag.

RADBAG is the official bivvy of the 2023 Adventure Racing World Championships 😊


Like your favourite campfire whiskey, RADBAG can be enjoyed neat, or mixed. Use it on its own or with a sleeping bag.
Adventure racers and other racing snakes, light-and-fast travellers will generally use it on its own. Simply climb into the bag with all your clothes on. Sleep. Get up, stow and go.
If weight is not an issue, or if cold is, then use your RADBAG in conjunction with a sleeping bag. The warmth that is added enables you to use a lightweight summer bag in less than summery conditions.
You can use it like a hard-shell outer layer for your sleeping bag, adding warmth, taking the windchill off, keeping you dry from rain and dew, and keeping creepy crawlies and reptilian friends out of your sleeping arrangements.
Keep your nice down sleeping bag clean and dry and free of holes from those bushes that looked so comfortable, or those sharp shells on the beach sand.
On warm nights, you can use it simply as a groundsheet.
Your RADBAG will adds ±10°C of warmth to your sleeping arrangements, more so if wind-chill is involved.



White with red logo, easy to find in the dark in the bottom of your pack


220cm long and 72cm wide
Weight: 169g

Fully enclosed

Drawcord at the opening (can be fully enclosed)

Packs down

Stuffing bag attached

Hang up to dry

Loops attached at the feet


With reinforced seams

Temperature/ Comfort Rating

+- 12 Degrees

The bivvy bag serves the purpose of keeping out the windchill. It features a drawcord at the top to be pulled tight over your head with an open slit for breathing – isolating your body heat inside the cocoon. 

If the temperature is moderate to warm, you can sleep straight inside the RADBAG – maybe with a thin liner (+ 5 degrees). If it is really cold or you will be sleeping out for the whole night, then you would climb into your sleeping bag and then into the RADBAG.

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RADBAG Original