Sofi's Nylon Adjustable Dog Collar &ndash; Soft and Pliable - Strong Quick Release Plastic Buckle &ndash; Zinc Alloy Loop for Leash Attachment (Large, Red) EASY TO PUT ON - Quick-release buckle allows for easy placement and removal. Simple one-click placement and you are good to go. LIGHTWEIGHT AND COMFORTABLE- The soft nylon webbing should fit comfortable on the dogs neck and not cause chafing or sores. With the plastic buckle it is lightweight. DURABLE - Durable plastic buckle. The collar is 100% Pure Nylon webbing material. The stress points have Bar-Tacked stitching for added strength. ADJUSTABLE - Adjust for the perfect fit and never need to adjust again unless your dog grow. You dont need to thread the collar through the buckle each time you want to take your dog for a walk. COMPATIBLE WITH ALL LEASHES - The metal D-ring allows you to attach any quality single handle, double handle, hands-free or retractable leash. Leash comes in sizes for most dogs: Small (10-16 x  wide) Medium (14-20 x 1 wide) Large (16-24 x 1 wide)