In the first image Lilly is wearing a 40cm necklace with 4 colour choices. 
Made with BPA free Silicone Beads. 
 
⚠️ Safety Disclaimer: Necklaces are decorative only.
Do NOT leave your pet wearing the necklace while unsupervised or while crated.
Not to be used for walking or pulling.
⚠️ These collars are NOT suitable for Cats
 
For measuring, please use a soft & flexible measuring tape (or a piece of string) to measure around your pet's neck. Keep in mind, adding an extra inch will allow it to drape slightly as a necklace would. These accessories are meant for fashion & style and to be worn as costume jewellery SUPERVISED.