¿With two layers of durable nylon sewn together, the hound-style collars provide extra strength by reducing stress on the buckle. Reflective strip sewn onto durable Safety Orange nylon make the collars high visible and reflective in oncoming light at night. Carefully finished for comfort, appeal and durability Constructed from high quality, 1-inch double ply nylon that has been specially processed to prevent fraying and increase strength Collar features all metal hardware Pre-determined no-tear holes allow this standard collar to adjust from 19-inch up to 22-inch