Packing Cubes by Size: Small, Large & Extra Large

Shop packing cubes by size - small packing cubes for the fiddly stuff, large packing cubes for the bulk, extra large packing cubes for the properly big things.

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What size packing cube do I need?

Small cubes take underwear, socks, swimwear and children's clothes. Medium takes t-shirts and tops. Large takes trousers, jumpers and a week of one person's clothes. Extra-large takes coats, towels and bedding. Most people over-buy large and under-buy small - exact dimensions are listed on every product page.

About our large, small & extra-large

Getting cube sizes right is most of the game. Small packing cubes are for the fiddly categories - underwear, socks, swimwear, kids' clothes - the things that otherwise scatter through a case like confetti. Medium handles t-shirts and tops. Large packing cubes take the bulk: trousers, jumpers, a week of outfits for one person, or bedding for a weekend away. And extra large packing cubes swallow the genuinely big items - winter coats, towels, wetsuits, the baby's entire wardrobe. This collection lets you shop by size rather than by set, which is the right move when you're topping up an existing system, replacing a single well-travelled cube, or building a custom layout for an unusual case. Every size shares the same fabrics, zips and handles, so new cubes slot straight in beside old ones. Sizes and dimensions are listed on each product page. Free UK delivery over £20 and a 100% money-back guarantee across every size.

What size packing cubes do I need

The quickest way to answer "what size packing cubes do I need" is to think in categories, not bags. Small cubes hold the fiddly things that otherwise scatter - underwear, socks, swimwear, chargers, kids' clothes. Medium cubes are the workhorse for t-shirts and tops. Large cubes take trousers, jumpers and a week of outfits for one person. Extra-large cubes are for the genuinely bulky items - coats, towels, bedding and wetsuits. A carry-on trip is usually two or three cubes; a checked family case is a set with at least one large. Because every size here shares the same fabric, zips and handles, you can buy a single cube to fill a gap and it slots straight in beside cubes you already own. Exact dimensions are on each product page.

Shop packing cubes by size

Sizes are the one thing worth getting right before you spend anything, because the wrong size cube is worse than no cube: too big and it bulges and wastes the corners of the case, too small and you end up with five of them and no system. Our large and extra large packing cubes take the bulk - trousers, jumpers, coats and towels - and every one of them ships as part of a graded set so the smaller sizes come with it. If you are packing cabin-only, work downwards instead: small and medium cubes, or a compression cube squashed flat, will fit a strict allowance where a large cube will not.

A quick sizing rule

Small cubes for underwear, socks, swimwear and children's clothes. Medium for t-shirts and tops. Large for trousers, jumpers and a week of one person's clothes. Extra large for coats, towels and bedding. Most people over-buy large and under-buy small, which is why a graded set beats picking sizes one at a time. Exact dimensions are listed on every product page so you can plan the case layout before you order.

Packing Cubes by Size: Small, Large & Extra Large: key facts

Products in this collection: 2
Price range: £10.99 – £34.99
Delivery: free on UK orders over £20, otherwise a flat £5.99
Dispatch: within 48 hours, Monday to Friday
Arrives: within 8 days of ordering, anywhere in the UK
Returns: 30 days, full refund, we pay the return postage
Payment: Visa, Mastercard, Amex, Maestro, Discover and PayPal via Stripe
Sold by: The Packing Cube Co., a UK business

Packing Cubes by Size: Small, Large & Extra Large - FAQs

What size cube do I need most?

If you're buying one cube, make it a medium - it handles tops, the most numerous category in most cases. Building a system? Two smalls, two mediums and a large covers a week for one.

How big is extra-large, really?

Big enough for a winter coat, two bath towels or a whole toddler wardrobe. Exact dimensions are on the product page - it fills roughly half of a medium suitcase.

Can I mix sizes from different sets?

Yes - the size system is shared across every collection and colour, so any small sits flush beside any medium. Top up freely.

What size packing cubes do I need for a week away?

For one person over a week, a medium and a large cover most clothes, with a small for underwear and socks and an extra-large only if you are carrying coats, towels or bedding. Travelling as a family, size by person rather than by category - one large cube each is easier to manage than sorting everyone's tops together.

What size packing cube is best for a carry-on?

Small and medium. A large cube can be taller than a strict under-seat allowance once it is full, so cabin-only travellers do better with two or three smaller cubes, or a compression cube squashed flat. Measure the packed cube against your airline's stated dimensions before you fly.

Can I mix cube sizes from different sets?

Yes. Cubes are soft-sided, so they flex against each other rather than needing to interlock. Mixing sizes is exactly how most people end up packing - a large from one set, a couple of smalls from another. Matching colours is the only thing you lose, and colour-coding by person is arguably more useful anyway.

How many packing cubes fit in a suitcase?

A standard cabin case takes about three or four graded cubes; a large hold suitcase takes six to eight, or a full set plus a shoe bag. The trick is not to count cubes but to pack each one to about ninety per cent so it stays square - a case of firm, square cubes fits far more than a case of bulging ones.

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