Brain Eco Martingale Collar Naturalist or fill it up with

or fill it up with notes and head to the lecture hall

So don't miss out on this newest version of Evolution

it’s also made to quench the thirst of one

it’s a gift that’s sure to impress the geneticist in your life

Brain Eco Martingale Collar Naturalist or fill it up withA brainy collar for a smart dog! Martingale collars are what you need if your dog's head is smaller than its neck like a greyhound or a whippet, any dog prone to slipping their collar, or dogs with delicate tracheas and necks like chihuahuas and pomeranians. Our Martingale collars are available in three sizes, adjustable, and built with rPET webbing (made from recycled soda bottles).