Quality mesh fabric, dog collar with reflective trim 5 adjustment holes. Size M for a neck of 39 to 51 cm. Size L for a neck of 49 to 61 cm. Note: Before ordering, please make sure your dog’s neck is suitable for this size (this is very important). Package Content: 1 necklace for dog This dog collar is made from soft mesh fabric that is soft to the touch and breathable. It will not hurt your pet’s neck. The D-ring makes this necklace more distinguished and upscale. Sturdy and hard-wearing for long-lasting use. Very cute fashionable dog collar, soft mesh fabric, high quality and skin-friendly.