In the video I mention the color being red mahogany. It can also be considered a dark cherry.
Tooled Cherry Chain Martingale w/ Sapphire Crystals (18 3/4")
Tooled cherry "English" bridle leather chain martingale collar; Diamond cluster of sapphire Swarovski crystals in center and one crystal at each end of tooling; Heavyweight leather; Grooved edges; 1 1/4" width tapering; Large stainless steel 3 ring assembly chain; 18 3/4" inner circumference
Because the chain martingale collar needs to slip over your dog's head, you need to measure the largest point BEFORE it slips onto and over the ears. Using a flexible tape measure is helpful. The measurement around the head will be the inner circumference or inner measurement of the collar. Be careful to avoid fingers under the measuring tape. Remember that it is easier to slide a collar over the head and onto the neck than to pull it off.