Where can I buy the smallest leash?

Could you tell me, please, do you use lead for dogs? Where can I buy the smallest leash?

I'm not using leashes because my old leash broke when my dog tried to run away from me.

Hello. I advise you to read reviews about hands free retractable dog lead. I haven't ordered this leash yet, but I'm thinking of doing it. I read the reviews about this website and saw not so many negative comments. It seems to me that this leash has many advantages over other conventional leashes. What do you think? Would you buy such a leash for your dog?