Made for year-round use-the fabric not too heavy for summer and not too thin for winter. We've got your baby covered! (*Minor alterations may be needed on some makes and models.) Carseat Canopy products are made for "year-round" use - fabrics not too heavy for summer and not too thin for winter. Each one of our canopies has bold, fresh, cutting-edge prints on 100% cotton outers with soft, snuggly, lovable 100% polyester minky interiors. Not recommended for use within motor vehicles.