Well my friend lives at the coast, she has two shih tzu`s. They are behind her on the bike in a special basket. Her daughter takes one and she has the other furbaby. Now I understand your concern about beiing not able to see Riley when he is behind you. I am in doubt also, but my friend says it works great, she can look behind her though to see if everything is allright. A doggy ride is great too, we take Karel in his but he sings all the way so everybody knows we are on our way Non of the furbabies I know who take rides on mommy`s bike have glasses. Some dogs really like to go on a bike ride