[rosygail]

We just purchased a full-size sofa bed and I am not sure what bed sheets to buy for it. After looking at it opened up, I don't think that a regular full size fitted sheet would stay in place due to the thinness of the matress.

Any advice from sofa bed owners out there?

[frannieb]

You can try the clips from BB&B to secure the bottom sheet.
They look like a garter.

[NotGolfer]

If you want the sheets that fit look for Dimensions catalogue (google this) as they might have that size for sofa-beds.

[asianthree]

Look for low profile sheet they are not as deep. Fitted Sheet I just tuck under.

[bxmt54]

There is a catalog/web site named Domestications that carries actual sofa bed sheets. I ordered some from them before and they work really well but do cost quite a bit more as they are specialty sheets.