When it comes to mattresses, sizes are standard for the most part. But it’s important to note that not all mattress types come in all sizes.

Here is a quick look at the dimensions of common Helix mattress sizes.
Twin: 38×75″
Twin XL: 38×80″
Full: 45×75″
Queen: 60×80″
King: 76×80″
Cal. King: 72×84″
The table below lists the individual thickness of each Helix mattress as well as which mattress styles are available in each size.
Mattress | Thickness | Twin | Twin XL | Full | Queen | King | Cal. King | Split King |
---|---|---|---|---|---|---|---|---|
Helix Standard | 12″ | Yes | Yes | Yes | Yes | Yes | Yes | No |
Helix Luxe | 14″ | Yes | Yes | Yes | Yes | Yes | Yes | No |
Helix Elite | 16″ | Yes | Yes | Yes | Yes | Yes | Yes | No |
Helix Plus | 13″ | Yes | Yes | Yes | Yes | Yes | Yes | No |
Helix Kids | 8″ | Yes | No | Yes | No | No | No | No |