Dacron Fresh Stroller Mat Aqua Stroller Mat Baby Stroller Mat Gray It looked fluffy and comfortable. I don't particularly feel any flattening of the filling, but please purchase only if you understand that this is a used item that a child has used. Please refrain from purchasing if you are looking for a product as good as new or if you are concerned about minor details. Returns and cancellations after purchase, including those due to size differences, cannot be accommodated. [Excerpt from the manufacturer's description] • Uses "dacron aqua," a high-performance filling material with excellent washability • Three-layer structure of three-dimensional fabric that combines breathability and cushioning • Washable, also effective against allergens • Compatible with 3-point and 5-point strollers from other companies, as well as AirBuggy