Fits Britax Marathon Classic 65. This Bokoo cover is the first two part car seat, uniquely tailored for your car seat. Designed with you and your child in mind, it will make it easier for you to keep your car seat clean and your child in a clean environment. Breathable, water-proof liner and patented anti-crumb design help prevent crumbs or liquids from soiling original car seat. Easy to take on and off, without having to fuss with buckles or remove the car seat. GreenGuard fabric is both fade-resistant and stain-resistant, so you can wash as often as necessary to keep cover clean. Certified organic fabric also available. Available in a wide variety of colors. Crash tested to the National Highway Traffic Administration FMVSS 213 on the model it is designed for. Chemically and flammability tested.