Roomy interior; compartment: 24-inch l, 12-1/2-inch w, 18-inch h with three-tier canopy that can be used opened or closed * Collapsible one-button, one-hand folding for storage or transport; folded dimensions: 34-inch l by 21-inch w by 13-inch h * Well ventilated multi-mesh opening design keeps pets safe and comfortable * Pet compartment has 2 safety belts attachments for your pet"s collar to keep them inside the pet stroller, even when used open; accomodates a pet up to 45-pound * Safety features include: reflective patches and lockable rear wheel brake