The Peanutshell Montessori Tummy Time Roller will help develop motor skills and cognitive recognition. Crawling after this colorful tummy roller will develop baby's arm, shoulder, and leg muscles, and encourages hand-eye coordination. Black and white print is great for developing eyes, and colorful stripes and adorable characters will capture baby's attention! Our tummy time roller crawling toy is made of printed PVC, with chambers that allow the 1 LED and 2 cute rattle bouncing balls to pass through. To use: inflate the roller. After use, empty roller of air, fold or roll it, and pack up until next use. Have fun with your little one, while they learn and grow!