Hi there! They have been on the chihuaha (8 pounds) thats my profile picture and also my yorkie (5 pounds). The velcro helps secure the booties. Thanks for asking! :)
I want to add that I have these shoes for my chihuahua/shih tzu mix. I've had a terrible time with keeping shoes on her. She manages to get them back off. NOT these shoes!! They go on firmly (not too tight or anything) and they STAY on!! Great shoes to get your dog used to wearing them. HA no- I do not know this seller at all.