For collars, we have cotton ones that are easy to wash, and are breakaway for when he spazzes and gets caught on something he won't choke. I love anything cotton really. It's always the most soft and comfortable thing you can wear. I've seen them in a bunch of different colors. My friend and I bought multi packs. She kept all thr girl collars, I kept all the boy ones. Except for one brown one with pink flowers. It is too cute!! I'm saving that one of I ever get a little girl.