The New "Generation 3" M1-K9 Adjustable Tactical Dog Collar is the ultimate large breed dog collar made of military grade, pistol belt webbing with a detachable utility pouch. The utility pouch provides convenient storage for the leash. This is a substantial, heavy collar, suitable only for larger dogs with a neck strong enough to bear the weight of the collar comfortably.
 
From the M1-K9 company:
"A salute to our United States military, to the soldiers, and to the working dogs that help them in the their mission." We agree!
 
We offer six colors: Black, OD Green, Marine Red, Safety Orange, Desert Tan, and Pink (You go, girls!)
 
Features
Steel Spring Gate Carabinera
6-ft. leash w/5mm D-ring
Dual Sets of Metal Adjusting Hardware
High-Strength Quick Release Buckle
Military Issue Dog Tag with Silencer
Black Brass Grommets
Steel D-ring and Adjustment Hardware
 
Comes in One Size
2¼"W x 16"-26" Length
 
MEASURING FOR A COLLAR
Before deciding the size, please take a moment to measure your dog's neck, using a cloth measuring tape or string, twine, etc. Measure, wrapping the tape or string about as tightly as the collar should sit on your dog's neck--not too tight. If using string, then hold the final length up to a ruler or yardstick to determine its length. If in doubt, go to the next larger size--you can always adjust a collar that is slightly too big, not so much with a collar that's too small. This will help prevent an exchange, which just wrecks everyone's day!  : )