Embroidered dog collar, Medium dog collar, Turquoise dog collar, beautiful dog collar, Girl dog collar, Floral dog collar, Dog collar, pretty dog collar, Adjustable collar, Unique dog collar, Handmade dog collar, Summer dog collar, Floral Pattern Small Dogs - Neck 9" to 15" Can be altered to be smaller Medium Dogs - Neck 11" to 18" 20mm Width All Collars can be altered to be smaller. If you want a collar in a bigger size check before placing an order. 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.