The tags are made of an advanced polyurethane formulation and are engineered to prevent cracking, remain flexible and provide excellent longevity. The All American® ear tag design features a Snap-Lok® collar for superior retention, a longer neck for greater visibility and ultraviolet inhibitors to resist fading. Ribbed neck prevents breakage. Sloped shoulder resists snagging. Tag edges with radius design prevents flex cracking. Fast, simple application. Excellent visibility and retention.