This is a small (26-40cm) Petissimo ENVY Phantom Reflective dog collar. adjustable collars come with high quality buckles & fasteners and a soft nylon backing for ultimate comfort. The Phanton Dog Reflective Collar comes in 3 different colours which are black, pink and brown. These collars come in 3 sizes small (26-40cm), medium (35-50cm) and large (48-70cm). They have a cool rocker like design combined with a reflective material that makes the collar stand out in the dark.