This pet stroller is made of a powder coated steel frame and waterproof oxford fabric for a durable and stable construction that ensures it will stand up to the rigors of outdoor adventures and provide long term use.The 88 lb. weight limit is large enough to accommodate most dogs, and the two 20-inch rear wheels not only travel smoothly on sidewalks, but can also handle off-road terrain. This pet bike trailer is made of very high safety features, with red flags on the dog cart and reflectors on the wheels that make it easy for other road users to see you and your pet even in low light conditions, which helps to keep you and your pet safe on the road. This pet bike trailer features a portable design that easily attaches to your bike using the included pull bar and hook, and the bike coupler is compatible with 26"-29" bike rear axles so you can easily attach it to your bike and get started on your adventure. Whether you're going camping, walking, biking or taking a short trip, you can bring your pet along to enjoy the outdoors. This pet bike trailer is an excellent combination of durability, safety, and portability, making it an indispensable helper for pet owners when they are out and about.