I feel like I am being extremely stupid. I bought an Emma mattress - fine but slightly too firm so I got the topper for it. Bliss - it’s just right now.
However, it didn’t come with straps or bands or anything to attach it to the mattress so it just moves around all night. I thought putting a fitted sheet on would wedge it on but the fitted sheet is now to small to encapsulate both mattress and topper so it just goes over the topper and I have the nuisance of rucked up sheet plus slides mattress topper every night. There has got to be a way to do this! Will I have more success with a flat sheet? Or is there something I can buy or fashion to attach it to the mattress securely?