Friends Forever Martingale Reflective Dog Collar What is a Martingale-Style Limited Cinch Collar? Recommended by thousands of dog trainers around the world the Martingale-Style Limited Cinch Collar is often viewed as the safest and most efficient way to train your dog. The limited-cinch style collar makes training a breeze. The collar is designed to tighten under tension. When an incorrect behavior is observed a pull of the leash reactively cinches the collar providing gentle but effective feedback, correcting the dog. To further deepen learning, over time the dog begins to correlate the sound of the chain “sound” to incorrect behaviors. This makes training effective and efficient! What makes us different? • PREMIUM QUALITY: Constructed with premium quality weather-proof nylon and a 100% iron chain, the Friends Forever Limited Cinch Collar is the perfect blend of durability, functionality, and aesthetics. • REFLECTIVE stitching, just in case you find yourself walking, running, jogging, or hiking with your dog as the sun goes down. 2 SIZES: Medium: 16-22 inches; or Large: 20-25 inches. Warranty: 12-month No Questions Asked warranty. —– If you like our product, share your experience! We appreciate your feedback! If you are not 100% satisfied in our service or product quality, please contact us for rectification. We would love the chance to make things right! Have questions or suggestions? Please email us at email@example.com.