The Trixie Cavo Stop-the-pull Collar is a training collar made from webbing tape and braided round material. It is available in various sizes to fit different dogs. The collar features a flat strap and round mesh design. Available sizes include Small (30-36 cm/ 12 mm neck circumference), Small-Medium (35-41 cm/ 12 mm neck circumference), Medium (39-45 cm/ 12 mm neck circumference), Medium-Large (43-51 cm/ 18 mm neck circumference), Large (47-55 cm/ 18 mm neck circumference), and Large-Extra Large (52-60 cm/ 18 mm neck circumference).