Thank you for viewing. Front: 100% cotton Middle: Domet core Back: Double gauze Uses plastic snap buttons. The snap button area on the back is reinforced with cotton fabric, but please attach and detach gently. Neck circumference: Approximately 28cm From the neck to the bottom of the bib: Longest part: Approximately 8.5cm Shortest part: Approximately 7cm ⚠︎ Unlike other designs, this one has a single layer of double gauze on the back. Each item is carefully made, but due to the handmade nature of the product, there may be slight variations or distortions. We appreciate your understanding of the handmade quality. All fabrics are pre-washed before production. The actual color may appear different depending on your device and environment. We recommend using a laundry net when washing. Please refrain from using a dryer, as it may cause the fabric to shrink or become damaged. Shipping will be via Yu-Packet Post. We may be able to change to Nekopos, so please feel free to contact us. Thank you.