Sleep Innovations Shiloh 12-inch Memory Foam Mattress, Bed in a Box, Quilted Cover, Made in The USA, 10-Year Warranty - King Size

Do you find the mattress to be cool (if you tend to get hot/have inflammation)? Also, would it hold up with someone being bedridden (24/7 use)?

how is the longevity of this mattress a few years old?

Pictures all show with a headboard, do they come with a headboard?

Is there a difference between the quilted/smooth cover mattresses? is the firmness the same?