The JJ Cole infant bundleme lite in gray is made of weather-resistant nylon and polyester. Its exterior shell is water-resistant to protect your baby from nature"s elements. The baby bundleme keeps your little one warm and cozy too. This bundle me for car seat cover has a zipper for easy access to your child. It has an elastic band that can fit around baby car seats for a custom fit. This car seat cover is compatible with most standard baby car seats and is machine washable.