Can I use an electric blanket with my Simba? Simba - Odyssey February 19, 2018 11:16 Updated Follow Of course you can! Simba mattresses are designed to be used just how you like them - either cool or toasty warm! Related articles Do I turn my mattress over regularly? Do I need to use a mattress protector? Can I use the mattress on a sofa bed? I've unpacked it, how long until bedtime? Will I be able to get the mattress back in the box or roll it back up again?