I have already been take Sunshine Kids Ultra Mat, Gray for yesteryear almost 1 year. Sunshine Kids Ultra Mat, Gray wuth brand "Sunshine Kids" is the best on the market.

Sunshine Kids Ultra Mat, Gray Features

• Completely protects your car upholstery against scratches and dents from a car seat
• You can custom configure ultra mat to fit all rear facing and front facing convertible car seats or booster seats
• Top and bottom grip surfaces prevent car seat slip
• Washable, waterproof fabric
• Crash tested

These Sunshine Kids Ultra Mat, Gray way out perform some other brand including major brands and department store brands. The major selling points for me personally are hight quality with low price.
The Sunshine Kids Ultra-Mat is the perfect accessory for keping scratches and dents from the car upholstery. Just place it onto the seat before putting the car seat into the car. Place the car seat on top of the Ultra-Mat and make sure it is secure. The waterproof, washable fabric is easy to care for and is a top accessory. Sunshine Kids Ultra Mat, Gray even better than expected - highly recommend!!!
Brand: Sunshine Kids

I believe, explains the few grievance on Sunshine Kids Ultra Mat, Gray not fitting or leaking.
Hope this Sunshine Kids Ultra Mat, Gray comment was usefull!