Yes, tripping and wearing outdoors should not pose a problem for any of these designs or size of the dog. If the size is correct, then the pooch should be able to walk and run in it comfortably. A few of these costumes have long sleeves, so just make sure these are not so long as to cause a tripping hazard. These include the Holy Hound, Stegosaurus, Glow Bones, DC Comics Robin, and the Pirate costumes. A few have capes, such as the DC Comics Robin, Pirate design, and the Holy Hound. If not on the back properly, these could get turned around to the stomach and cause the pup to trip on the material. Just make sure all long and draping materials are out of the way of the legs, and everything should be fine for the dog’s mobility.