Question for moms who cosleep

Ni

How do you protect your baby from rolling off the bed? My babe is almost 6 months... he doesn’t roll in his sleep yet (he doesn’t budge at all), but when he does, what can I do to keep the bed safe?

(Im not interested hearing about not co-sleeping... we follow all of the rules of safe sleep from le Leche league and he has a smart sock on every night. It works for us)