Foam,Stainless Steel 【Easy of Travel】Front suspension with three heavy-duty automotive-grade, maintenance-free rubber tires reduce vibration and maximize stability for easy navigation with our pet stroller. Our pet carrier foldable system also makes it super easy to fit into the trunk of your car. 【Keeping Safe】From paws to the tail of our jogger stroller, you can rest easy that your dogs and cats are always safe with their rear brakes and safety tether. The stroller includes an upper and a lower safety leash. Our premium stroller features reflective lines for nighttime travel and two tethers in the basket to buckle your pet in snugly. 【Strolling In Sight】Keeping a close eye on your pets can be easier and each compartment of this pet stroller features zippered mesh screen windows for easy zip and go. On top of watching out for your pet, our jogger stroller also provides the proper ventilation for small animals. 【Comfortable for pet & Owner】This pet stroller also features an easy-to-clean machine-washable carrier pad inside the cart for added comfort. Our jogger stroller too with extra storage areas for your water bottle, treats, keys, and dog toys for your arrival at the dog park. 【 Easy to Assemble】 Our pet carrier assembly is easy to assemble just five minutes to set up and boasts plenty of storage space. If you have any questions about our pet stroller, please contact us at any time. we promise we will provide you with the most professional technical support and best solution.