For storing a comforter flat under a bed or on a closet shelf, a jumbo flat vacuum storage bag in the Ziploc Space Bag line suits most households because the maker lists a jumbo flat size that is sized for king-size bedding. Buyers who only need to store one queen comforter can use a smaller flat bag. The bag matters less than the air removal method, because every flat bag on this list needs either a vacuum cleaner hose or a hand pump to reach its stated compression.
At a glance
The table below lists the bag types covered in this guide and the stated sizes and compression claims from the makers or from outlets that cite them. Compression figures are maker or marketing claims and depend on how full the bag is, how much air is removed, and what is inside.
| Bag | Best for | Stated specs | Limits |
|---|---|---|---|
| Ziploc Space Bag Jumbo Flat | King-size comforters and bedding sets | 35 x 48 inches, sold in a pack of 2; maker says it can compress up to 2 king comforters and 2 pillows | Needs a vacuum cleaner hose over the valve or a suitable pump; large footprint when filled |
| Ziploc Space Bag Extra Large Flat | Queen comforters and sweaters | 26.5 x 39.5 inches, pack of 2; maker lists 3x storage and up to 18 sweaters | Smaller than the jumbo; not sized for two king comforters |
| Ziploc Space Bag Travel | Lighter items and travel | 18 x 22.5 inches, pack of 2; maker lists 2x storage and no vacuum needed because the bag is rolled | Too small for a full comforter |
| Ziploc 2 Flat and Tote Variety Pack | Mixed bedding storage | Two Extra Large Flat bags and one Extra Large Tote; the maker lists 3x storage | Price and pack contents vary by retailer and region |
| Spacesaver vacuum bags | Buyers who want a hand pump | One 2026 roundup says its hand pump worked as well as a vacuum cleaner in its test | The hand-pump claim is from one roundup and was not confirmed from the maker |
Match the bag to the bedding
Bedding is bulky in a different way from clothes. A queen comforter has a lot of volume, and a king-size comforter is larger still. Ziploc lists its Jumbo Flat as sized for storing bedding and says it can compress two king comforters and two pillows. For one queen comforter and a pillow, the Extra Large Flat is a more practical size because it fits more easily under a bed or in a closet.
A buyer’s guide cited by one roundup suggests that a 40-liter bag suits a single queen comforter, while king-size or multiple items call for 60, 75 or 100 liters. Those volume figures are general guidance rather than maker specifications. They are a useful way to compare bag sizes across brands, since a stated compression factor means little without knowing the starting volume.
Ziploc Space Bag Jumbo Flat: the king-size choice
The Jumbo Flat is the largest bag in the Ziploc line that this guide covers. It measures 35 by 48 inches and is sold in a pack of two, which suits a household with a king bed or several comforters. The maker says it is ideal for bedding and can compress two king comforters and two pillows, which is the figure to plan around if the bag will hold a full set.
The bag needs air removed to work as intended. Ziploc’s usage notes say to fill to the fill line, then use a standard vacuum cleaner hose over the valve to pull out the air. Once the air is removed, the bag should be closed and stored flat. A bag left partly filled or without a good seal will not reach the stated compression.
The jumbo size is large when filled, so the storage space needs to be planned around it. A flat bag under a bed works well with a bed frame that has clearance, and a closet shelf works if the bag can lie flat without being pressed by heavy items.
Ziploc Space Bag Extra Large Flat: the queen-size choice
The Extra Large Flat measures 26.5 by 39.5 inches and comes in a pack of two. Ziploc lists it as 3x storage, and says it can compress up to 18 sweaters. For a queen comforter, pillows and seasonal bedding, this size fits more places than the Jumbo and still gives a noticeable reduction in volume.
The Extra Large also pairs with the Extra Large Tote in the 2 Flat and Tote Variety Pack, which the maker lists at 3x storage. A tote helps keep bags upright and protected from dust, which matters for storage in a closet or basement.
Travel bag and smaller formats
The Travel bag measures 18 by 22.5 inches and comes in a pack of two. Ziploc says it provides 2x storage and needs no vacuum because it is compressed by rolling. It is suited to clothes and lighter bedding such as a throw or a blanket, rather than a full comforter. The maker’s descriptions of how many items it holds differ between pages, so treat any item count as approximate.
Spacesaver and hand-pump bags
Spacesaver is named in one 2026 roundup as the best overall vacuum storage bag, and that roundup says the hand pump worked as well as a vacuum cleaner and kept the bag sealed through a week of its own testing. That is one outlet’s experience, not a maker specification or independent lab result. Buyers who do not own a vacuum cleaner should confirm the hand pump is included and read the maker’s description before buying.
A hand-pump bag is useful for travel and for households without a vacuum cleaner that has a hose attachment. Hand pumps take more effort than a vacuum cleaner and may not reach the same compression on a bulky comforter, so the stated volume figures are best treated as upper limits.
Down comforters need a gentler approach
Down-filled comforters need special care. Ziploc advises reducing down-filled items to only 50 percent of their volume, because further compression can damage the down. Storing a down comforter at its maximum compression for months can flatten the loft and reduce warmth. A bag that is not sealed tightly will also let in moisture and dust.
For a down comforter, a breathable cotton storage bag or a loose box is often a better choice for long-term storage. A vacuum bag suits short seasonal storage, and the comforter should be fully dry before it is sealed. Read the care label for the comforter’s fill and any manufacturer guidance.
Compression claims and what they mean
Ziploc describes its Space Bag line as reducing volume by up to 75 percent. Other products in the roundups cite figures near 80 percent for bulky comforters. These are maker claims or marketing figures. The actual reduction depends on how much air is removed, how full the bag is, and the material of the item inside. A more realistic approach is to compare the bag’s dimensions and the item’s size before and after packing.
Some reviewers report that the seal on certain bags may not be fully airtight, which could let air return over time. Ziploc’s usage guidance on fill lines and valve use is the most direct source for the intended method. Checking the seal after a few weeks in storage is sensible.
Pick a bag if
| If you need to store | Pick | Reason |
|---|---|---|
| Two king comforters and pillows | Ziploc Space Bag Jumbo Flat | Sized for king bedding per the maker |
| One queen comforter and seasonal bedding | Ziploc Space Bag Extra Large Flat | Smaller footprint, 3x storage per the maker |
| Lighter items or travel use | Ziploc Space Bag Travel | No vacuum needed, rolled to compress |
| Bedding with no vacuum cleaner at home | A hand-pump bag such as Spacesaver | Hand pump included per the outlet cited, to be confirmed on the listing |
| A down comforter for long-term storage | A breathable cotton storage bag | Avoids over-compression of down |
Alternatives to consider
- Spacesaver vacuum bags: a hand-pump option named in a 2026 roundup for buyers without a vacuum cleaner.
- HIBAG jumbo bags: listed at 39 liters, 27 inches wide and 3.5 inches high in one roundup, which suits a single bulky comforter; the figures were not confirmed from the maker.
- Cozy Essential XXL bags: named in a roundup for bulky comforters, with a compression claim of up to 80 percent from that outlet, which is a maker claim rather than an independent result.
Frequently Asked Questions
Do I need a vacuum cleaner to use a Ziploc Space Bag?
For the Jumbo Flat and Extra Large Flat, the maker’s usage notes call for a standard vacuum cleaner hose placed over the valve to remove the air. The Travel bag is different, because it is compressed by rolling and needs no vacuum. Without a vacuum cleaner, a hand-pump bag or a roll-and-seal method is the alternative.
How much space will a king comforter save?
The stated compression depends on the bag, the comforter and how much air is removed. Ziploc says the Jumbo Flat can compress two king comforters and two pillows, which shows the scale the bag is designed for. Exact savings vary, so measure the packed bag’s dimensions to plan the space it will take.
Is a vacuum storage bag safe for down comforters?
Ziploc advises reducing down-filled items to only 50 percent of their volume, because compressing them further can damage the down. A vacuum bag is better for short-term storage than for months at maximum compression. A breathable cotton bag or a loose box is often better for long-term storage of down.
What size bag do I need for a queen comforter?
One buyer’s guide cited in a roundup suggests a 40-liter bag for a single queen comforter, while king-size bedding or several items call for larger sizes. Ziploc’s Extra Large Flat measures 26.5 by 39.5 inches and suits a queen comforter with other bedding. Compare the bag’s dimensions with the space where it will be stored.
Do vacuum storage bags keep out moisture?
A well-sealed bag limits moisture and dust, but it does not replace a dry storage space. Store bags in a dry area and keep the comforter fully dry before sealing it. Reviewers have also noted that some seals may not be fully airtight, so a check after a few weeks of storage is sensible.
Are the compression claims reliable?
The maker’s compression figures, such as up to 75 percent for the Space Bag line, are marketing claims that depend on conditions. Roundups that cite higher figures are also repeating maker or marketing numbers. Compare the bag’s dimensions and the item’s size in practice, and treat any single percentage as the best case rather than a guarantee.
