A double-wall box is a cardboard box made from corrugated board with two wavy (fluted) layers between three flat liners. That extra layer makes it stronger and more resistant to crushing than a single-wall box, which has one fluted layer between two liners. You can tell them apart by looking at a cut edge.
At Wigwam
Every box in our Box Shop is double-walled. Prices as listed in September 2026:
| Box | Size | Each | Pack of 10 |
|---|---|---|---|
| Medium | 457 x 330 x 330mm | £3.50 | £25.00 |
| Large | 450 x 450 x 500mm | £4.50 | £35.00 |
| Extra Large (the tall box) | 450 x 450 x 750mm | £5.25 | £45.00 |
| Wardrobe Box, with hanging rail | 508 x 457 x 1016mm | £9.99 | not sold in packs |
The Medium box has the longest base side (457mm), but the Large is wider and taller, so it holds about twice as much: roughly 50 litres for the Medium, 101 for the Large and 152 for the Extra Large, from the outside dimensions. No weight limit is published for any of them.
Our moving kits bundle them with tape (£1.99 on its own), a marker pen (£1.99) and, in the two bigger kits, a 750mm x 25m roll of bubble wrap (£14.99). Against the same items bought separately, at the Box Shop's September 2026 prices (the boxes, packs and kits were shown as sale prices; the tape, pen and bubble wrap weren't):
| Kit | Contents | Kit price | Same items bought separately | Difference |
|---|---|---|---|---|
| Student | 5 medium, 5 large, tape, pen | £35.00 | £43.98 as single boxes | kit saves £8.98 |
| Standard | 10 medium, 10 large, 5 Extra Large, tape, pen, bubble wrap | £99.99 | £105.22 using the packs of ten | kit saves £5.23 |
| Large | 15 medium, 15 large, 10 Extra Large, tape, pen, bubble wrap | £195.00 | £163.97 using packs of ten plus singles | kit costs £31.03 more |
So for a bigger move, packs of ten were the cheaper way to buy at those prices. Prices change, so compare on the day. Buy online from our Box Shop, which delivers to your door. Our Chipping Norton page mentions an onsite packaging store, and our Shipston-on-Stour page lists packaging materials for sale at the site; at other sites, ask.
When it matters
In storage a box has to carry weight for weeks or months, not just survive a van ride. Use double-wall boxes for heavy things like books and kitchenware, anything fragile, and the bottom layer of every stack. Keep heavy items in medium boxes so they stay liftable, and put light, bulky things like bedding in the large and tall ones. Boxes of the same size stack more safely than a mix.
Related terms: Wardrobe box · Packing tape · Bubble wrap · Packing paper
Related questions: Are free moving boxes good enough for self storage? · How many boxes will I need, and which moving kit fits my home?