Guardian Gear® Classic Nylon Collars are made of high-quality nylon that is durable and practical. Bar-tacked stitching at stress points adds strength. Adjustable Nylon Collars come in two widths and feature plastic delrin, quick-release buckles and nickled-plated D-rings. Available in 5/8" width x 14-20" and 1" width x 18-26", in Black, Blue and Red.