The 3-In-1 Bike Basket is the most convenient way to travel with your small pet. The sleek design and color options offer something for everyone. You can carry it over your shoulder while you shop. You can secure it with the seat belt in your car for a safe trip to the vet. You can take it on the plane while on vacation. Now it comes with a free universal bike adaptor to use as a bike basket on a pleasure ride through the park. The 1400 series (Small) measures 14”L x 10”W x 9”H and is made for pets up to 12 lbs. The 1450 series (Large) measures 15.5”L x 11.5”W x 11.5”H and is made for pets up to 16 lbs.