The vario basic ecco sport collars from hunter are made of top quality nylon they are very strong and robust yet soft to touch the ecco sport nylon collars are great value and the perfect choice for all those who like to walk their dog whatever the weather vario basic ecco sport dog collars at a glance colour black material nylon polyamide very durable suitable for all weathers soft and flexible very comfortable fully adjustable practical push in buckle excellent value dimensions siz