Open vs Sewn Footbox

By topquilt.com · Updated Oct 21, 2026 · 6 min read

The footbox is the enclosed pocket at the bottom of a quilt. When choosing between an open vs sewn footbox, you're trading a small amount of warmth and weight for versatility. Neither is wrong; they suit different sleepers and seasons.

Footbox types explained

• Sewn footbox: the bottom of the quilt is permanently stitched into a closed, insulated pocket. No zipper.
• Zippered footbox: a zipper (usually 15–30 inches) runs up the bottom; zipped, it forms a footbox, unzipped, the quilt lies flat.
• Drawcord-and-snap footbox: the bottom edge cinches closed with a cord and the sides snap together. Lighter than a zipper, but there's a small opening at the cinch.
• Fully open quilt: no footbox at all — essentially a shaped blanket, mostly for summer.

More on each design in the quilt footbox guide.

Side-by-side comparison

Warmth

Feet get cold quickly because they're far from the core and have lots of surface area. A sewn footbox wraps them in continuous insulation with no seam to leak heat. Zippered footboxes use a draft tube to cover the zipper, which works well but is never quite as seamless. Drawcord footboxes leave a small hole at the cinch point; makers often add a plug or extra down, but a little heat can still escape. On cold nights the difference is real but modest. Warm socks or down booties will matter just as much; see sleep clothing for quilts.

Weight

A zipper, its draft tube and the extra fabric overlap typically add something like an ounce. Drawcord systems add less. For ultralight hikers counting every gram, a sewn footbox is the lighter choice; for everyone else, the difference is small enough to decide on versatility instead.

Versatility

This is where open footboxes shine. Unzipped, the quilt lies flat to cover you like a comforter on warm nights, at home, in a car or as a blanket around camp. That flexibility lets a single 30°F or 20°F quilt span a wider range of temperatures. Sewn footboxes can still be vented by loosening the neck and letting your feet poke out the top edge, but you can't flatten the quilt.

Hammock vs ground

On the ground, most sleepers keep the footbox closed all night anyway, so a sewn footbox gives you the benefits without losing much. In a hammock, an open footbox is popular because it's easier to get in on a diagonal, you can vent the feet independently, and some people like to drape the quilt partly under them on warm nights. That said, many hammock campers sleep well with sewn footboxes. See how to use a top quilt in a hammock and the hammock top quilt guide.

Footbox fit: size and shape

Whichever type you choose, the footbox has to fit. A footbox that's too tight compresses the down around your feet, making them colder no matter how much fill the quilt has. One that's too roomy leaves dead air your feet have to heat. Things to check:

• Room for your feet in socks or booties. If you wear down booties in winter, you need more space.
• Room to sleep on your side. Side sleepers' feet point sideways, which needs a wider footbox.
• Length. If the quilt is too short, your feet push into the end and compress it; size up if you're near the top of a size range.
• Baffle direction. Many footboxes use vertical baffles so down stays around the feet instead of drifting up the quilt.

Sizing details are in quilt width and length sizing.

Drafts at the bottom: troubleshooting

If your feet are cold with an open footbox, check these first:

1. Is the zipper fully closed and the draft tube lying flat over it?
2. Is the drawcord cinched tight and the cord-lock pushed fully closed?
3. Is the footbox plug (if present) in place, or is there a hole at the bottom?
4. Are the snaps along the sides all closed?

With a sewn footbox, cold feet usually mean compressed down, damp socks or not enough pad R-value under your feet. See why am I cold in my quilt for a full checklist.

Model examples: the Revelation and the Enigma

The clearest real-world comparison comes from Enlightened Equipment, which sells essentially the same quilt both ways. The Revelation has an open footbox that closes with a zipper and drawcord; the Enigma has a sewn footbox. The Enigma is a little lighter at the same rating and has no zipper to manage, while the Revelation opens flat and is more popular with hammock users. Compare them in Revelation vs Enigma, or read the full Revelation review and Enigma review. Other makers such as UGQ let you pick the footbox as a custom option.

Worked example: one quilt vs two

Suppose you camp from June to October with lows from about 55°F to 25°F. Option A is a single 20°F quilt with an open footbox, around 20–22 oz: open flat in July, closed in October. Option B is a 40°F sewn-footbox quilt (around 13–15 oz) plus a 20°F sewn-footbox quilt (around 19–21 oz). Option B saves around 6–8 oz on summer trips and a bit on fall trips, but costs roughly twice as much. For most people, Option A is the smarter first purchase; Option B makes sense once you know you'll keep using quilts. Weights are approximate and vary by maker.

Recommendations by sleeper type

Common mistakes

• Leaving a drawcord footbox half-cinched. A small hole at the bottom can chill your feet all night.
• Choosing an open footbox for a winter quilt just for versatility; you'll almost never open it below freezing.
• Stuffing gear into the footbox. Water bottles and electronics compress the down; put them in a stuff sack beside you instead.

Recommendations by season

• Summer (lows 50°F+): open footbox, or a fully open quilt. You'll spend many nights with it flat.
• Spring and fall (lows 30–50°F): either works; open for versatility, sewn if you sleep cold.
• Late fall and winter (lows below 30°F): sewn footbox, ideally with vertical footbox baffles and room for down booties.

Pair the footbox choice with the right rating using the temperature ratings guide.

Durability

Zippers are the most common failure point on sleeping gear. A broken footbox zipper isn't usually a trip-ender — you can still tuck the quilt — but it's a hassle. Drawcords and snaps rarely fail. Sewn footboxes have nothing to break. If a zipper does fail, see how to repair a quilt.

Verdict

Choose a sewn footbox if…

• Your quilt is rated 30°F or colder.
• You sleep mainly on the ground with a pad.
• You're a cold sleeper or have chronically cold feet.
• You want the lightest, simplest quilt with no zipper to fail.

Choose an open (zippered or drawcord) footbox if…

• You hammock camp and like to vent or get in easily.
• You want one quilt to cover summer to fall.
• You sleep warm or camp mostly above 40°F.
• You want to use your quilt as a blanket at home or around camp.

Both have their place: plenty of hikers own a sewn-footbox winter quilt and an open-footbox summer quilt. Browse options in best winter top quilts and best summer quilts, or work through the top quilt buying guide.