country brook petz - vibrant 15 color selection - martingale heavyduty nylon dog collar (medium, 1 1/2 inch wide, black) country brook design country brook petz' martingale nylon dog collars are a great solution for your pup’s pulling. made with two loops, our martingale style collar will give you gentle control when walking your pet. perfect for training, our collar is designed to prevent your pupper from slipping their head out of it. as your pet pulls, the collar will tighten without choking them. when the tension gives, so will the collar; the martingale will loosen when your dog stops struggling against it. the limited closure of the martingale collar prevents it from becoming too tight. a no-slip, adjustable-choke collar is an excellent solution for hard-headed pups who slip out of their collars. our collars create a safer experience for your dog. once you receive your collar, open the collar wide by adjusting the metal slide. slip it over your dog's neck and decrease size until you can comfortably slip only a couple of fingers under the collar. the unique, limited closure prevents the choke from becoming too tight. constructed using 100% nylon webbing, our collars are ribbed, soft, and sleek to the touch; they also sport a bit of sheen. we at country brook petz pride ourselves on only using the best hardware and you can rest assured that these collars will withstand whatever your pup brings its way. all of our collars are handcrafted after the sale. please note that we will ship within two business days of receiving payment and size. if you have sizing questions, please give us a call prior to ordering. we want doggos to be able to show the world their new collar immediately, so be sure to measure for the right size. you can check this out by using a string or tape measure to see where the collar will fit snugly and comfortably on your dog’s neck.