3 Dirty Dawgz Exclusive Adjustable Cool and Happy Dog Baskin in the Sun Dog Collars for Medium Large and X-large Dogs These awesome collars are constructed in the USA 1" width dog collars Please be sure to measure your dog's neck for correct size for proper fit Available in 3 sizes: Medium 14"-22", Large 17"-27", X-large 20"-34" We use Polypro webbing instead of thick nylon for the heavy backing. It is JUST as strong as bulky nylon but much lighter on your dogs neck