The Sleepypod is more than a pet bed, more than a carrier or car seat: it's a lifestyle. It's your pet's personal space, designed to fit his/her individual needs. Sleepypod pampers your pet in luxurious ultra-plush and foam, providing comfort and security. Transformative Sleepypod is three products in one: it's an everyday pet bed, a stylish carrier, and a safe car seat. The Sleepypod mobile pet bed allows a pet to travel safely in the comfort of its bed, thereby reducing travel-related stress because the Sleepypod is already a trusted part of its everyday life. Just zip on the lid, and you're both ready to travel. They are certified by the Center for Pet Safety for pets 15 pounds and under. Sizing and preferences vary by the pet, just like humans.