【4 Sizes Available】S-(9"-13", 3/5"); M-(12"-17", 4/5"); L-(15"-20", 1"); XL-(18"-25", 1"), We have 4 different size options, suitable for large, medium and small dog. Please measure the size of your dog's neck before purchase, and leave 2 fingers comfortable space. | 【Unmatched Quality】Our dog collar and leash set is constructed with premium strong 100% nylon webbing, Washable, Non-fading, Durable, Lightweight, Silky touch, Bring ultimate comfort to your dog, Perfect for everyday use. | 【Premium Reflective Nylon】Highly reflective stitching keep high visibility at night for safety. And you can easy find your furry pet at night and in low light situations. It's safer to go out at night. | 【Lockable Buckle】Side release buckle is made out of quality eco-friendly plastic with safety lock to prevent the collar from accidentally opening, Quick release buckle helps you put on or take off the dog collar conveniently. | 【Adjustable Leash】We have innovatively designed a leash with adjustable length from 3.6 feet to 5.9 feet, It gives enough freedom for your dog but everything in your control. Great for training, hiking, walking or running.