The Pet Gear, Inc. 5-n-1 I-GO2 Sport has a telescoping handle with wheels to function as a rolling case. It can be used as a backpack, tote, carrier, or car seat. The Sport offers you versatility and affordability. Comes with removable pad for easy washing, tether to secure animal, and wheel cover. If the pet fits the dimensions of this product comfortably when the product is fully assembled, the product will support the weight of the pet. For small pets only. Read sizing dimensions of product carefully.