This bracket is for someone who is restless in bed and would always end up tangling and having blankets and sheets undone, like so…

Vinyl-coated steel support won’t snag or rust, slips under mattress, holds bedding up, away from feet. 20″ arms accommodate many deeper mattresses. Assembles easily without tools, and folds flat during the day. Instructions included. It’s safe for electric blankets, too.

Via Mileskimball