Will VÅGSTRANDA Pocket spring mattress, medium firm/white, Twin fit in a Peugeot 308 2022?

The Peugeot 308 gives you a hatchback boot that is short but usefully deep. The opening measures 37¾″ wide by 29⅛″ tall, and the floor runs 30¾″ with the seats up, stretching to 58¼″ once you fold the rear bench, a gain of 27½″. The narrow point of the floor is 32¼″ across, so wide flat loads sit fine, but anything past 30¾″ long needs the seats down. The load lip sits 27½″ off the ground with a 6¾″ drop to the floor, so heavy boxes take a short lift then settle low. It takes suitcases and boxed furniture well, long flat-pack less so. Fold the seats before you load, not halfway through.

The VÅGSTRANDA Twin arrives roll-packed as a single dense block, 43¾″ × 18¼″ × 17½″, weighing 69 lb 4 oz. The shape is friendly, the weight is not: it is a compressed pocket spring mattress, so all of that mass sits in a stubby bundle with no handles and a wrap that likes to slip. Because its longest edge is 43¾″, most hatchbacks swallow it with a seat folded, and many boots take it outright. Carry it with two people, load it on its long side, and leave the wrapping sealed until it is in the bedroom: once it unrolls, it never goes back.