Luckinpet Waterproof Dog Collar We Used The New Tpu Material Which Is Resin But Plastic Exactly The Odorless And Waterproof Material Which Keeps Its Flexibility In Cold Weather (Remains Soft & Flexible To -40 Degrees F) It Is Soft And Comfort But Not Sticky High Resistance To Oils And Abrasion While More Durable Than Rubber Or Plastic Its An Alternative Upgrade Collar For Pvcnylonleather Collars We Used Metal Buckle And D Ring With 35 Adjustment Holes Cut To Size For Custom Fit Hi Flex 34 Inches X 28 Inches Collar Strap Fits Garmin Delta, Sportdog, Patpet, Tri-Tronics Dogtra Pettech Petspy Petsafe Petrainer Educator Esky Mothca, Ipets +More Its A Perfect Choice To Refresh Your Pets Dog Training, Fence Collar Keep Em Safe, Stress Free Suitable For Almost All Activities, You Can Use It For Dog Training, Patrol, Hiking, Jogging, Hunting, Camping, Working, Running, Jumping, Traveling, Etc As A Perfect Necessary Accessory, We Suggest You Buy The Package Of 2 With Higher Cost-Efficiency One For Use And One For Backup Safety Information I>Dont Leave Collar On While A Dog Is Unattendedi>