Will Your Cat Fit? A Cat Tunnel Bed Size Guide

A cat tunnel bed has more than one kind of fit. Your cat needs room to move through the entrance, a resting surface that suits the way they sleep, and a place in your home where neither opening ends up against a wall.

Start with those three checks. A weight recommendation can help narrow your choice, but it cannot tell you whether a particular cat will enjoy an enclosed passage. Here is how to read the measurements of the ITNaps Cat Tunnel Bed before deciding.

Start with the entrance

The ITNaps design has a continuous square tunnel with two entrances on opposite sides. Each entrance measures 21 × 14.5 cm, or approximately 8.3 × 5.7 inches. These are the dimensions to check first if your cat will be using the tunnel.

Notice how your cat moves through the spaces they already choose. Consider their head and chest size, body shape, and willingness to duck into an enclosed opening. Two cats of the same weight can have very different builds.

You can draw the opening dimensions on a sheet of paper to understand the scale. Use that as a visual reference, not as a test to push your cat through. If the opening looks close to your cat’s body dimensions, ask us for help before ordering. Never force a cat into the tunnel to check the fit.

Read the weight range as a starting point

The product is designed for cats weighing approximately 1–9 kg, or 2.2–19.8 lb. That range is guidance, not a promise that every cat within it will comfortably use every part of the bed.

A broad-chested cat may find the entrance restrictive. A cat who prefers open resting spots may use the center cushion and ignore the tunnel. For a larger breed, assess the opening and resting surface separately instead of relying on the breed name or weight alone.

Separate the center opening from the cushion size

The different cushion measurements describe different parts of the product:

• Center opening: 33 × 33 cm, or 13 × 13 inches.
• Cushion overall: 54.61 × 54.61 cm, or 21.5 × 21.5 inches, including its base.
• Raised cushion center: 35.56 × 35.56 cm, or 14 × 14 inches, and approximately 8 cm or 3.1 inches thick.

The overall cushion measurement should not be read as a 21.5-inch-wide raised sleeping surface. When assessing resting space, compare your cat’s usual curled-up position with the raised center. If your cat mostly sleeps fully stretched out, allow for that preference rather than assuming they will curl up to fit.

Measure a resting spot your cat already uses. It is a useful reference for how much space they choose, although a familiar blanket and a new cushion will not necessarily feel the same to them.

Measure the floor, too

Assembled, the tunnel bed measures 75 × 75 × 15 cm, or 29.5 × 29.5 × 5.9 inches. Mark a 75 cm square on your floor before buying. Then check the space around it: can people walk past, and can your cat approach both entrances?

The product footprint does not include that extra access space. A square that fits neatly between the sofa and wall may still be an awkward location if one entrance faces the wall. Rotate the planned layout and check it again.

Leave room for your cat’s preferences

Fit is also about choice. A cat may investigate the mesh sides, nap on the removable cushion, or take time before entering the tunnel. An open approach to both entrances lets them explore and leave at their own pace.

This is a fabric play-and-rest product, not a chew-proof or scratch-proof structure. Check it during use, especially if your cat chews fabric or scratches heavily. Stop using damaged parts with loose material or exposed components.

Before you decide

• Compare the entrance size with your cat’s build, not just their weight.
• Check the raised cushion area against their usual resting position.
• Mark the full footprint and leave both approaches clear.

View the ITNaps Cat Tunnel Bed and full specifications. If a measurement leaves you unsure, contact us with your cat’s weight, approximate body measurements, and the space you have available.