The Best Daybed Bolster Pillows

The three measurements that decide this

Before comfort, fit. A standard twin daybed mattress is 39 by 75 inches, and the pieces that go against its back have to work with those two numbers.

Three things fall out of that table.

Width. Two 36-inch wedges come to 72 inches against a 75-inch mattress. That three-inch gap sits at one end and it is visible. Two 37-inch CRAURU inserts come to 74 and effectively close it — which is the main reason to prefer inserts over wedges if the daybed is on show.

Depth at the base. This is the number that decides how much of your daybed you lose. A 9-inch wedge takes a 39-inch daybed to about 30 inches of usable seat, which is a normal sofa. A 20-inch back insert takes it to about 19 inches, which is a bench. Plan the insert depth as seating depth, not as sleeping depth.

Drop. Only the Laura Ashley set publishes it — 17 inches — and it is the measurement that decides whether a cover hides the frame rails or stops short of them. Nautica publishes no drop for an otherwise near-identical set.

Solid foam or shredded foam

This is the one choice on this page that will still matter in two years.

Solid foam — the Foam Global wedge. A single block holds its shape under a back indefinitely, which is exactly what you want behind somebody’s shoulders. The honest gap in the listing is that Foam Global runs to three bullets and never quantifies the density, so “high-density” is the maker’s word rather than a figure. There is also no cover, so it needs one or it stays bare foam.

Shredded foam — the CRAURU inserts. Shredded fill is more forgiving to lean against and it conforms, which some people much prefer. It also packs down in the spot a back sits, in a way a solid block does not, and it arrives vacuum-packed needing up to 48 hours to recover loft. One more honest note on that listing: its size field reads 37 by 5.1 inches while the bullet reads 37 by 20 inches, which is the kind of discrepancy worth resolving with the seller before you order.

Our general rule: solid foam where a back leans every day, shredded foam where you are refilling covers you already own and like.

Inserts, covers, and the gap between them

The commonest mistake in this corner of the market is buying one half of the purchase. Here is what each of these four actually is.

The Foam Global wedges and the CRAURU set are inserts: foam and nothing else. No cover, no fabric, nothing to wash.

The Laura Ashley and Nautica four-piece sets are covers: a quilted daybed coverlet, two shams, and a bolster cover. The bolster cover is an empty sleeve 14 by 36 inches. It does nothing at all until you put something inside it — which is where the Foam Global wedges or a 14-by-36 bolster insert come in.

A note on the Nautica listing, since it will confuse you otherwise: it is titled as a five-piece set and itemises four pieces — one cover, two shams, one bolster cover. It is otherwise the same four pieces as the Laura Ashley set, in all-cotton and reversible, and it publishes no drop.

What this does to the daybed

Adding back support changes a daybed’s proportions, and it is worth picturing the result before you order.

Thirty inches is a sofa seat. Nineteen inches is a window seat, and perfectly comfortable if that is what you want — a reading corner in a study, for instance — but it is not a place three people will watch a film. The CRAURU set makes more sense as a refill for covers you own than as a first purchase for a daybed you want to use as a couch.

And of course none of this is reversible nightly: the cushions have to come off before anybody sleeps, which is the standing nuisance of using a daybed as a sofa. The wider question of whether a daybed is comfortable for an adult is in are daybeds comfortable for adults and how to make a daybed more comfortable, and the frames that already look like seating are in the best daybeds that look like a couch.

Who should buy which

Buy the Foam Global wedge pack as the pick and the budget pick both. Solid high-density foam, 36 inches wide, 12 inches high, 5 inches at the top and 9 at the base — the right shape, in the material that holds it. Accept a three-inch gap across a 75-inch daybed, no cover supplied, and a listing that never quantifies the density.

Buy the CRAURU four-piece set if you already own covers that have gone flat, or you want the back to span the full width. Two 37-inch back inserts and two bolsters in one order. Accept shredded foam that packs down, up to 48 hours to regain loft, a contradictory size field on the listing, and that a 20-inch back insert leaves about 19 inches of seat.

Buy the Nautica reversible set if you want the quilted look in all-cotton for less. Four pieces, reversible, machine washable, 5.2 lb. Accept that the bolster cover is empty, that no drop is published, and that the title says five pieces for four.

Buy the Laura Ashley set if you want the one cover on the market that publishes its drop — 17 inches — so you know whether it will hide your frame rails. Accept that it is the most expensive set here, that it supplies no bolster insert, and that the reverse is polyester rather than cotton.