The formfitting design holds the AirTag tightly to keep it from falling off, while the triple silicone material resists yellowing and stretching for lasting use. These SaharaCase collars feature an adjustable strap that fits on small and medium breeds comfortably. Compatible with Apple AirTagKeep your dog safe using the Apple AirTag technology.Triple silicone materialFeatures reduced stretching and yellowing and guards against scratches and dirt.Adjustable strapIt can be easily adjusted for small and medium breeds.Formfitting and lightweight designProvides a snug and secure fit.