Memory foam pad size chart: kid, cot, single, twin, twin XL

Five sizes in inches, with the measuring order that stops the width mistake. Measure first, then buy.

We earn a commission on qualifying purchases made through the links on this page.

All five sizes are the same three inches of foam. The only variable is the footprint, and it is the footprint that goes wrong.

Sizes as stated on the product page, inches
NameLength × width × thicknessWhere it usually goes
Kid63 × 26 × 3a child's cot or a narrow camp bed
Cot72 × 24 × 3a standard folding camp cot
Single75 × 30 × 3a guest room floor, a wide cot
Twin75 × 38 × 3a twin bed frame, a van floor
Twin XL80 × 38 × 3a long twin frame, a truck bed

Measure in this order

  1. Width first, inside any rails. This is where the complaints come from.
  2. Length second, between anything that stands proud at the ends.
  3. Height clearance third, if it goes into a vehicle with a lid or a shell.

Mentioned above

3-inch memory foam camping pad, Grey

3-inch memory foam camping pad

Cot / 72*24*3 · Grey

  • 3 inches of memory foam, removable washable cover
  • allow 72 hours to expand

$49.99 recorded 2026-08-25

4.5★, 732 ratings, recorded 2026-08-25

Rated together with one other size or colour See it on Amazon

Print this page at 100% and the outlines below come out at 1.6 pixels to the inch, which is 1 : 60 of real size. Mark the same rectangle on your cot or vehicle floor with masking tape and you will see the overhang before you order.

Kid63 × 26 in
Cot72 × 24 in
Single75 × 30 in
Twin75 × 38 in
Twin XL80 × 38 in
Throw60 × 50 in
Twin blanket84 × 62 in

Printer scaling varies. If yours rescales the page, use a tape measure instead: the numbers under each outline are the real dimensions.

The rule for between-sizes

Take the narrower one. A pad an inch too wide on a cot rides up the rails and tips you towards the middle all night. A pad an inch too narrow simply leaves an inch.

Printable fitting outlines

If you would rather see it than calculate it, mark the footprint on the cot or the vehicle floor with masking tape at the sizes above before you order. That takes two minutes and answers the question completely, which is more than any chart can do.

Memory foam pads →Sleeping on three inches →Getting creases out of a rug →

What buyers mention most, counted on 25 August 2026.