Based on our own experience, this silicone replacement is a perfect fit for our Forerunner activity tracker .It's comfortable and adjustable making it easy to wear during workouts or even during daily tasks. The silicone material also makes it easy to clean, and it comes in a variety of colors. The only con is that it may not be as durable as more expensive bands, but for the price, it`s a great value. Health and household enthusiasts can't go wrong with this affordable accessory..See full review