Mattress Sizes, when to change mattress
& mattress maintenance

International Mattress Sizes (Dimensions in inches. 1 inch = 25.4 mm)
Denomination	USA & Canada	Europe (UK)	Asia (Thailand)
Twin/Single	39 × 75	36 × 75	42 × 78 × 22
Twin/Single XL	39 × 80	-	-
Double/Full	54 × 75	54 × 75	48 × 78 × 22
Double/Full XL	54 × 80	-	-
Queen	60 × 80	-	-
Olympic Queen	66 x 80	-	-
California Queen	60 x 84	-	-
King	76 × 80	60 × 78	72 × 78 × 22
California King	72 x 84	-	-
Super King	-	72 × 78	-

Time to change.......

•  After 7–15 years, depending on use and quality, although many people use their mattresses longer.

•  Experts indicate that two adults sleeping nightly on a queen mattress will notice the padding, not the coils, breaking down after a period of four to six years. While the mattress will still be comfortable, it will no longer feel the way it did when first purchased.

•  When laying a hand on the mattress with about three pounds-force and sliding it over the mattress lumps can be felt.

•  When the user regularly wakes up feeling tired, stiff, achy and sore and the reason can be traced to the mattress.

•  When inner coils start springing out of the mattress.

•  When the mattress shows very visible deformities.

•  When the mattress has a large permanent sag in it.

•  When the box spring creaks and squeaks.

When the user has difficulty finding a comfortable position in which to sleep.

Care & Maintenance of your mattress:

•  A new mattress should be put on a firm base, never on a saggy base.

•  Most manufacturers of box spring mattresses suggest that the consumer should regularly rotate and flip the mattress and box spring. Otherwise, they caution the mattress will fail. Most manufacturers recommend to rotate the mattress (180 degrees, so the head of the bed becomes the foot) every three months and to turn the mattress at least twice a year. Some manufacturers recommend to alternately turn and flip the mattress once every two weeks for the first three months and then twice per year after that. The foundation should also be turned every 12 months. Mattresses should be rotated to reduce wear patterns over time. Since around 2000, several manufacturers started producing one-sided mattresses that cannot be flipped, and, in some cases, should not be turned.

•  Do not wet a mattress. An impermeable mattress protector can be used to keep it clean.

•  A vacuum cleaner can be used for regular cleaning.

•  Use a mattress pad to keep the mattress free from stains. If stained, use mild soap with cold water and rub lightly. Do not soak a mattress or foundation.

•  If a mattress has handles, they are usually only for positioning it, not carrying it. See your owners manual.

•  A Spring mattress should not be folded or bent, as is can be permanently damaged.

Sitting on the same spot of the mattress edge can permanently depress it.