is there something that I can do that my topper shouldn’t move around?
Hi izzy,
Normally a well fitting mattress protector and the sheets over the topper would prevent it from shifting but if for some reason (perhaps based on the weight of the person or on the type of topper or cover material or using it on an adjustable bed) you find it shifting then you could sew elastic straps to the corners of the topper and put them under the mattress like a fitted sheet which would probably help.
You could also try using velcro strips attached to the edges of the topper and the mattress cover
Phoenix