People say it's bad to be a smarty-pants, but it's always good to be a smarty-pup! And what better way to show off your dog's intelligence than with a math-inspired leash?

Made to be both durable and comfortable, our eco-leashes are made with recycled soda bottles! In addition to being printed with glorious full-color designs in over 20 different scientific disciplines, they're built with a thick rPET webbing, a locking carabiner, a padded handle, a traffic loop, and a metal loop to attach your doggy bags.