Naturehike – U250 – hooded envelope sleeping bag (comfort 8 °C)

The Naturehike U250 is a rectangular sleeping bag with a hood. Rectangular means roomy: you can move your legs and you are not laced in the way a mummy bag does it. That costs some weight and volume — this is a bag for people who value comfort over the last gram.

Key features

• Comfort rating 8 °C.
• Fill hollow cotton (synthetic).
• Outer fabric pongee (100% polyester), machine washable.
• Open size 220 × 80 cm, packed size Ø23 × 38 cm.
• Drawcord hood, so your head stays warm without you crawling under the fabric.
• A collar around your shoulders keeps the warm air in — in practice that matters more than thicker fill.
• Unzips fully into a blanket, and joins a second bag (left and right zip) into a double.

What you use it for

For car camping, huts, festivals and bike trips where you have luggage space. It will not go into a small seat pack; on a rack or in a pannier it will. Also a good spare bag at home, precisely because it opens out as a blanket.

Size and temperature

Open it measures 220 × 80 cm, so it is roomy for anyone up to roughly 1.85 m. Naturehike rates it at 8 °C comfort: the temperature at which you sleep comfortably in it, not the point where you are just about coping. Do keep in mind that a sleeping bag does not insulate you from the ground — your mat does. If your mat is not warm enough, a thicker sleeping bag will not save the night; look at your mat's R-value first.