Shur-Lock Collar:Outside diameter 36 inch- Neck Size 4.0 to 8.0 inches (Extra-Large or Obese Dogs, Bull Mastifs, St. Bern.)

New improved plastic collars at a low price - SAVE $5 each. Our collars stay on because they fit better. Save time - no more changing from one size to the next. They are 2-4 times more adjustable. Satisfaction Guaranteed. We guarantee the lowest price. A larger neck opening plus twice as many adjustment openings insure a better fit on a larger variety of breeds.