Shamas has a 1" brown leather collar for holding his tags. and I'm really excited to have found his canvas-and-chain Martingale again. I put his official tags on that one, and he wears it when walking with me. He walks beside me better on the Matingale than the harness, and is very responsive to the light movements on the leash, because he likes it loose as a necklace lol. Plus, I can slide it off for dog parks
This is the Martingale I use.-Shamas seems to relax on it, and is doing much better around stimuli.
We still use his Harness for walks where he's leading, or bush/tracking walks, places where I know he'll pull. So I gear him up with both on leaving the house in case we leave the paths or see oncoming dogs. I also have my two-ended lead, which lets me do a quick switch from collar to harness by simply clipping one end at his neck and one at his back/front clip
Someone mentioned buckle failure, and I have experienced this with Shamas-nearly resulting in him catching the neighbour's cat this spring. Neither of my current collars have buckles(unless you count belt-style buckles) I nearly bought the KONG collar, looking at the metal buckles...but decided on the leather instead