This is a crocheted collar made with cotton yarn (^^) It is a handmade item. 【Material】Cotton This material can be used all year round. 【Colors】White, Fluffy White 【Neck Length】Approximately 44cm Suitable for adults and children♪ However, We recommend that it be worn by children who can walk. *There is a possibility that the neck may become constricted if worn by children who crawl or scoot. *As this is a handmade item, there may be some loose threads or uneven parts. We appreciate your understanding. *Shipping will be via regular mail.