14. Video: Why won't it work on my mattress?

Because you didn't measure your mattress and check the chart below. For mattresses that are not adjustable, the length can be off by only one inch OR the width can be off by only one inch, but not both. For adjustable beds, the length and width must match exact Better Bedder® measurements. 
Not measuring is the number one reason why the Better Bedder® isn't working correctly. There are many variations to standard mattress sizes. If you receive your Better Bedder® and your sheets won't fit tight, then your mattress is several inches smaller than a standard (and you never knew it). Better Bedder® measurements are:

Twin 38" x 75"
Full 54" x 75"
Queen 60" x 80"
King 76" x 80"
Cal King 72" x 84" 
The Better Bedder® should be tightly gripping the corners of your mattress but should be loose along the sides. The Better Bedder® must sit at least two inches below the top of the mattress. If you have a removable mattress topper, the Better Bedder® should sit two inches below it. If you have a sturdy permanent topper, the Better Bedder® should sit just below the topper.

If your mattress is 17 inches in height or less, you’ll tuck the excess of the Better Bedder® under your mattress.  If your mattress is over 17 inches in height, you simply won’t have any excess Better Bedder® to tuck under your mattress. If you have a thin mattress, it needs to be firm for the Better Bedder® to work. If your mattress is under 7 inches, then it must be very sturdy for the Better Bedder® to work. If your mattress is soft and flimsy, the Better Bedder won’t grip the corners of your mattress like it should. Instead, your mattress may bend from the Better Bedder®.

We also offer a custom-made Better Bedder® tailored to your precise dimensions. So even if your mattress is not a standard size, there is a Better Bedder® for you.