Description Neck designed to allow tag to hang below ear hair - better visibility Ribbed neck - prevents breakage Ultraviolet light inhibitors - resists fading Registered Snap-Lok collar for superior retention Softer, more flexible polyurethane formulation Sloped shoulder - resists snagging Tag edges with radius design - prevents flex cracking Proper button shaft length for rapid healing Single-use button tip helps prevent infection transfer Flexible button shaft and head resist snagging Specifically formulated for superior laser, hot stamped, or inked number and code life