Linenspa 3 Inch Memory Foam Mattress Topper Cover–Keeps Topper Clean and Safe–Machine Washable–Non Slip–Breathable

Does it make it cool or hot to sleep?

Will this fit an xlong twin latex topper?

I already have a mattress and box spring cover. I want to cover our topper. Will this cover protect topper from bedbugs?

What is the size of the full in inches and size of full xl in inches?