Solid Covers for Above Ground Pools (Also Known as Winter Covers) The solid pool cover is by far the most common cover out there. They are the most versatile and are used to winterize pools. Solid covers are given this name, because they are made out of waterproof material.

Solid pool covers have a plastic or vinyl appearance that has no holes. It is completely solid all the way across and smooth to the touch. Mesh pool covers are very fine, tightly knit fibers that allow water to pass through but not debris. So, they have a more textured look than a solid cover.