The adjustable K9 Elite Martingale Dog Collar with quick release is a fantastic premium dogcollar. Handmade in our atelier in Amerongen Netherlands. Great for handling and training large canine male or female k9 working, sporting and domestic dogs. Comes in 2 or 1.5 inch width. Custom handmade upon ordering in our Extreme Dog Gear Atelier The Netherlands and shipped within one or two working days. The correct information about measuring the neck can be found further down this page.