A Simple Guide to Mattress Sizes

Sizes are the part of a mattress decision you can settle with a tape measure. Names drift between countries and retailers, but numbers do not. This guide walks the Vibez range size by size, with the floor area each one needs and the cases each tends to suit.

Sizes here are written width x length x height, in inches. The first two figures decide whether a bed fits the room; the third matters later, for sheets and for getting in and out.

Names are conventions rather than guarantees. A Full and a Double usually describe the same idea, and a King in one country is not a King in another. Compare the figures, not the words, and if a listing leaves a number out, ask for it before ordering.

Vibez plans rooms on 24 inches of walking clearance at both sides and at the foot of the bed. That is roughly enough to pass with an armful of bedding and to open a drawer without turning sideways. As arithmetic:

If the bed floats away from the wall, add another 24 inches to the length. If a wardrobe door opens into the walking space, count the swing rather than the closed door. These are planning conventions, not rules, and a smaller gap can work in a room you pass through rather than live in.

Both are 38 inches wide. A standard Twin mattress is 75 inches long, while the Vibez Twin XL mattress is 80 inches long and starts at $6,199. The current Original Hybrid range begins at Twin XL; Twin remains available in the Topper. Five inches is the entire difference, and it counts for more than it sounds: 80 inches is also the length of a Queen and a King, so a taller sleeper who has outgrown a standard Twin usually wants the extra length rather than extra width.

Twin XL has a second use worth knowing. Two of them side by side measure 76 by 80 inches, which is exactly a King footprint, so a pair can suit two sleepers who want separate surfaces on one frame.

The Full is 54 inches wide and 75 inches long, from $6,999. For one person it adds 16 inches of width over a Twin while asking for very little extra floor: about 102 x 99 inches, or 8 feet 6 inches by 8 feet 3 inches.

For two adults, do the division before deciding. Fifty-four inches split two ways is 27 inches each, which is less personal width than one sleeper gets on a 38-inch Twin. Plenty of couples share a Full without complaint, particularly in a room that will not take anything larger, but it helps to go in with the number in mind. Note as well that the Full keeps the Twin's 75-inch length, five inches shorter than Queen and King.

The Queen is where most rooms and most couples land: 60 by 80 inches, from $6,999. Against a Full it adds 6 inches of width and 5 inches of length, which works out at 30 inches each for two sleepers.

Floor area needed is about 108 x 104 inches, or 9 feet by 8 feet 8 inches. That is the practical threshold for a Queen in a bedroom that still functions as a room rather than a bed with corridors around it.

The King is 76 by 80 inches, from $8,499. It is 16 inches wider than a Queen at the same length. Split two ways, it gives each sleeper 38 inches, the full width of a Twin, which is why it tends to be the size people move to when a partner, a child or a dog regularly joins the bed.

It needs about 124 x 104 inches of floor, or 10 feet 4 inches by 8 feet 8 inches. Measure this one twice. A King fits into a great many rooms; a King with 24 inches to walk at both sides fits into noticeably fewer.

A California King is not simply a larger King. In the usual convention it is 72 by 84 inches, so 4 inches narrower and 4 inches longer. It answers height rather than shoulder room, and it needs roughly 120 x 108 inches of floor.

One thing to know before planning around it: Vibez builds Cal King in the topper only. The Original Hybrid does not include Cal King; it includes Split King as two Twin XL units with a 76 x 80-inch combined footprint. If you already own a Cal King mattress and want to change the surface, the Cal King topper is 72 x 84 x 2 inches at $599.

Two sizes are built with a split at the head end: Flexhead Queen, 60 x 80 x 11 inches from $7,999, and Flexhead King, 76 x 80 x 11 inches from $9,499. Split King uses two Twin XL units, measures 76 x 80 x 11 inches as a pair, and is $10,398. The footprint and the room arithmetic are identical to the standard Queen and King, so nothing about your floor plan changes.

The split exists so the head end can move as two separate halves rather than one piece, which suits setups where each sleeper wants a different head position. It is only useful with a base that supports independent movement on each side. Base compatibility is product specific, so check the product details before ordering rather than assuming an existing frame will work.

Every Original Hybrid size is 11 inches tall. That has two practical consequences.

The Vibez Topper adds 2 inches to whatever it sits on. On an existing 10-inch mattress that makes a 12-inch stack, and sheets, protectors and any safety rails have to accommodate the new figure.

The topper is a separate 2-inch comfort layer for a mattress you already own. It does not replace the mattress or the support system beneath it. Sizes and prices:

One detail to check rather than assume: the Full topper is listed at 56 inches wide, while the Full mattress is 54. Measure the mattress you own before ordering any topper, because size names are not a promise of identical figures between products or manufacturers.

Using 24 inches of clearance at both sides and at the foot, with the head end against a wall:

Round up rather than down. Numbers are always tidier on a plan than furniture is in a room.

A size that fits the floor still has to reach it. Before ordering, take five minutes with the tape measure:

Get the figures on paper and the rest of the decision becomes much easier to make. Size is the constraint everything else has to live inside, and it is the one part of the process that does not depend on how a bed feels on a showroom afternoon.