For cool little customers the maxi cosi summer cover keep temperatures down in the warmer months it is designed to protect your maxi cosi priori sps car seat sold separately this summer cover will fit over the standard cover and allows for quick and easy fitting and removal the maxi cosi summer cover is made from breathable cotton fabric and keeps moisture away from the child making it comfortable for young ones in summer months especially if your maxi cosi priori sps car seat is a dark