This 100% cotton jersey knit yellow square play yard fits joovy sheet is made of the highest quality fabric that's measured at 165 gsm (grams per square meter). These are softer than your favorite t-shirt, and as soft as flannel. Our yellow sheets are elasticized around the entire edge with deep pockets which prevent them from slipping off the mattress. The safety and comfort of your baby is our top priority. These yellow sheets are so durable that they will last as your baby grows. At Sheetworld we produce the highest grade sheets on the market today. Color is a solid soft yellow. Size: 38 x 38.