Duke's new collar is leather with dog bones. Very pretty. Also, very reasonable at Petsmart. Only $16. I don't like the spiked collars. For one thing, how about when the dog is scratching himself and rubs his paws against those? And I had a nylon collar a long time ago but it tore up really easily. This new collar I've got now is very durable. Much nicer than the one I bought for a lot more money.