Heart Pattern dog collar, Small dog collar, Blue dog collar, Pink dog collar, Girl dog collar, cute dog collar, Dog collar, pretty dog collar, Adjustable collar, Unique dog collar, Handmade dog collar, Sweet dog collar, Heart Pattern - Small Dogs - Neck 10 to 15 Inches - 20mm Width - Since Dogs come in all shapes and sizes, we recommend you measure your pooch so you get the right size. We recommend you use a seamstress tape measure. If you don't have a seamstress measuring tape, mark the measurements on a piece of string and measure against a ruler or rigid measuring tape.