Package included mountain buggy protect car seat black mountain buggy protectalpha car seat base belted mountain buggy protect car seat black the mountain buggy protect car seat weighs just 3 9kg making it one of the lightest infant seats available and has a number of innovative safety features the car seats high sides protect your little one using esp foam for both comfort and safety the liner also features adjustable energy absorbing head and hip inserts for your newborn while the seat