Gorilla Grip Original Mattress Slide Stopper and Gripper, Couch, Keep Bed and Topper Pad from Sliding for Sofa, Beds, Chair Cushion, Mattresses, Easy Trim, Slip Resistant, Grips Helps Stop Slipping

My mattress has little rubber grips on the bottom but unfortunately I use a mattress encasement to protect it, which has the side effect of making my mattress slide around. This grip pad does the trick perfectly, and now my mattress stays put. There are some complaints about the odor of the product. If you push it to your face and smell it, it does indeed have an off odor, but it's not powerful enough to notice it once the pad is in place. However, if you flip your mattress as some do, it might impart the odor onto the opposite side of the mattress, which is something to consider.

I ordered this expecting not to work, as my mattress topper usually slid 6" off my bed every time I sat on it. This stuff works! I slide on and off my daybed all day as I use it as a couch. It has moved a total of 1/4" at most since I've installed this grippy stuff. My only regret is not ordering it sooner!

I got a lighter weight mattress (which I now love) for a guest room, on a slatted frame that doesn’t require box spring. This works great and mattress doesn’t slide around at all.

Doesn’t cover the whole bed. And I got the bigger size

All it took was a pair of scissors to install and these nonslip sheets started working immediately