Five products in one; carrier, car seat, backpack, roller bag and tote * Included tether can be attached to your pet"s harness for extra safety * Telescoping handle stores out of the way just like a suitcase * Sides can be expanded to add 3 inches of additional space; features two side storage pouches for your pet"s extras * Measures 16 L x 12 W x 15 H-inches