i have the following setup: - queen size titan luxe by brooklyn bedding - 3" talalay soft topper by brooklyn bedding with a cotton cover

it is 19" deep.

the topper likes to slide around on the mattress.

a lot.

like any time i get up, i have to fix it before getting back in the bed.

i've tried the following: - using a tight fitted sheet to cover both mattress and topper at the same time - using bigger/less tight fitted sheet to cover both at the same - sheet over just the mattress, and then sheet over just the topper - sheet over just the mattress with another fitted sheet over both topper and mattress - mattress pad for deep mattresses, used on mattress under the topper, over both topper & mattress, over just the topper - mattress protector for deep mattresses, tried in the same configurations as with mattress pad (and in conjunction with the pad, and without the pad) - gorilla grip mattress gripper which is an anti-skid mat that's usually used under floor rugs, used between topper and mattress with or without all the sheet, mattress pad, and mattress protector configurations listed above)

i've dug through this sub, old posts and FAQs and such, and none of the mattress covers will work for me as none are deep enough for my setup.

i presume i need a true queen size mattress cover but am definitely open to other ideas as long as they aren't just replications of something i've already tried.

HELP!