First, I purchased the flat top pillow for elevating my legs when I had a displaced meniscus tear (a piece of cartilage had torn and lodged between the two leg bones that meet at my knee, keeping me from being able to straighten my leg fully). This cushion is nice. It inflated completely right away. A few weeks later, I bought the 7” wedge because I had surgery, and they told me it was important from then on to fully straighten my leg while elevating it. Unfortunately, this cushion is not as nice as the first one: it didn’t inflate as quickly and one edge is sorta permanently funky/melty. I just took off both covers for the first time and washed/dried according to instructions. I noticed the zipper for this pillow is really annoying (first photo). It takes a lot of effort to get it fully zipped, especially around the corner, and it keeps stopping like it’s caught even though it isn’t. It also feels like it could break pretty easily. It helped to pull it taut from the top, but that’s also hard to do while also pulling thin zipper and trying to make sure the inside parts of the zipper stay out of the way. The zipper on the flat top pillow (second photo) is much sturdier, and I had no issues at all zipping it. Although the covers are removable and washable, it’s definitely NOT easy to get them on and completely aligned, so it’s not something I will be doing terribly often. I noticed the cover catches lint, but it seems to have come off during the washing/drying, so that was nice. The foam on the two versions are different colors, and the flat top pillow foam seems nicer—as in the shape and edges are crisper. I’m honestly really sad about the zipper on the regular wedge because it’s such a PITA and who knows how long it will last.