I ordered this sheet set for two reasons 1. Because it said it was for mattresses up to 16” and 2. because of the reviews. Sadly, the set doesn’t live up to the expectations. The fitted sheet fit my 16” mattress pretty well,  but the flat sheet isn’t long enough on the sides of the bed, only at the foot of the bed does it have extra room. They are also very thin, which is not much of an issue. They’re good for the summer, nice and light. But I would have to see if they’re durable before giving them 4 stars.