Dog collars don't always have to be complicated: With the Trixie Premium Pull Stop Dog Collar, you have an easy-to-use accessory for outings with your dog. The collar automatically tightens to your dog's neck circumference when tension is applied and loosens when released. Trixie Premium Pull Stop Dog Collar is infinitely adjustable and can be altered to fit your dog. It is easy to put on by simply putting the collar over your dog's head. It has no fasteners that can make the collar complicated. The collar also has an eyelet on the brand tag, where you can attach your dog's tags or a flashing light for added safety. Trixie Premium Pull Stop Dog Collar - Black at a glance: Simple pull stop collar for medium to large breed dogs Pull stop function: collar tightens when pulled and loosens when released Infinitely adjustable: the length can be changed and adjusted to your dog's neck circumference Easy to use: is put over your dog's head Durable material: made of durable polyester and metal Practical eyelet on the logo: for attaching a dog tag or light Subtle design: can be easily combined with other accessories With o-ring: for attaching the leash Type of fastening: chain Material: Collar: polyester Rings, chain, slider: metal Logo with eyelet: plastic Colour: black Dimensions: Size S–M: 30–40cm neck circumference, 15mm (W) Size M–L: 35–50cm neck circumference, 20mm (W) Size L–XL: 45–70cm neck circumference, 25mm (W)