Kooloop Dog Collar, the best Dog Training Collar | Great Walking Dog Collar With one touch Release in Red, The Best Dog Collar For Large and Medium Dogs| PBlue And Orange. MULTI-FIT sizing Med to Big 14"-22" neck sizes for an exact 2 finger snug fit. No more loose collars. PADDED HEAVY DUTY Polyester, superior quality materials for strength, corrosion resistance & lightweight with soft neoprene padding. UNIQUE NO HARM NO BUCKLE fast & easy double cam safety lock designed to lock into the collar both ways Great safety for quick release under pressure & easy fast fit/release for everyday. INCREDIBLE 220lb restraint on collar & lock. Ideal for running and walking dogs with greater pulling strength.