Its My Birthday Dog Bandana Collar, Dog Birthday Party Bandana, Pet Scarf with Adjustable Collars for Small Medium Large Dogs Cats Pet, Black, Blue, Pink, S ,M, L birthday dog bandana of material: cotton Collar material: Nylon Size S: Adjustable length:27-40cm/10.6*15.74inch, suitable for small and medium dogs M: Adjustable length:32-50cm/12.5*19.68inch, suitable for medium and large dogs L: Adjustable length:38-60cm/15*23.6inch, suitable for large and super large dogs Widely applied: pet grooming, weddings, photography, parties, birthdays, celebrations, and daily wear. Notes: 1. Please allow 1-3 cm difference due to manual measurement and 3-5 g for the difference between different colors. 2. Due to the screen difference, the color may be a little different from what you expect, please allow it. 3. 1.00cm=0.39"