Chair bed is a folding mattress which in 3 seconds a chair is. Here you will find for this kind of mattress replacement covers and bags.
Replacement cover for mattress 200x70x10 cm
60x70x30 cm folded
200x70x10 cm unfolded
Natalia Spzoo folding mattress 200 x 70 x 10 cm
Tested for harmful substances according to Oeko-Tex Standard 100