We have four Slik Hound collars, and they are the only ones I like for my sweet Elly May. Her head is very close to the same size as her neck, and these collars are the only ones that don't come off. They're pretty (just like her!), and they are durable. I've had two of them for at least 3 years, and I just got two new ones to put in the rotation. Plus they wash well, which is important for my dog who likes to roll in every dirt pile she can find! I highly recommend them.
1.5" Wide, 13-23" long, plastic buckle, Pink Blossom