COMPATIBILITY ONLY – READ BEFORE BUYING 1-inch wide collar fits ONLY Educator 800 & 1200 series receivers (FE-580, ET-800, UL-1200). This collar will NOT fit Mini Educator, ET-300, ET-400, or any receivers designed for 3/4-inch straps. WIDTH IS FOR RECEIVER FIT – NOT DOG SIZE This is a 1-inch wide collar designed specifically for larger Educator receiver housings. If your receiver requires a 3/4-inch strap, this collar will be too wide regardless of your dog’s size. TRIM-TO-FIT LENGTH FOR LARGE DOGS 33-inch collar intended for dogs approx. 20 lbs and up with neck sizes about 6–22 inches. Collar must be test-fitted and trimmed to length before use. Measure carefully before cutting. DURABLE BIOTHANE – WATERPROOF & ODORPROOF Made from premium Biothane that will not fray, resists water and odors, and is easy to clean. Built for outdoor use, training environments, and active dogs. QUICK SNAP BUNGEE DESIGN – MADE IN USA Features a comfort bungee loop to reduce tension, plus a quick-snap clasp and metal D-ring for easy on/off and leash attachment. Proudly Made in the USA with live U.S. phone support available.