Room for a patch – There's a hook-and-loop panel on each side, so a DO NOT PET, IN TRAINING or NERVOUS patch goes on and comes off in seconds. If your dog needs people to keep their distance, this is the one.
Four points of adjustment – Two at the neck, two at the chest, so the fit survives a winter coat growing in and coming out again.
Neck and chest sizing – S: neck 36–46 cm, chest 36–50 cm (9–17 lbs). M: 44–54 / 46–63 cm (17–31 lbs). L: 47–64 / 54–71 cm (31–50 lbs). XL: 60–79 / 68–93 cm (50–99 lbs).
A handle you can actually hold – Padded and wide, over a 1-inch buckle rather than the thin one these usually ship with.
Reflective trim, not a reflective logo – It runs the outline, so the shape reads as a dog in headlights.
The harness itself is light – Between 0.49 and 0.63 lbs depending on size, per the maker.