With Nantucket's Expandable Rear Pet Carrier, you can bring your small pet along for the ride! Once you reach your destination, it unfolds to give your pet additional room to play. Also included are a removable and washable fleece pad for your pet's comfort, along with an internal leash attachment to keep your pet safe and secure. It attaches to your existing rear rack with four clip-on straps plus a seat-post strap.