Brain Eco Martingale Collar Naturalist it’s a gift that’s sure

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

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

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

Fill it up with field notes

Brain Eco Martingale Collar Naturalist it’s a gift that’s sureA 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).