For an all-round decent performer when it comes to space, durability and easy maintenance, the Alphabetz is a good choice. This is a large car seat travel bag and can easily accommodate all the main brands plus space for a booster seat base and a few more essentials. It has a straightforward design with a wide top entry and drawstring closure and is made from waterproof nylon that is travel-durable. Despite its size, this car seat bag is also relatively easy to carry, with a single adjustable shoulder strap. What we also like about this car seat carry bag is how easy it is to keep looking good, wiping clean with just soap and water.