The TuneBand for Samsung Galaxy S3 (SIII) provides a comfortable way to wear your device while running, working out, working in the yard, or walking around the block. It features a protective silicone skin that allows access to all ports and buttons (including the front and rear cameras), and two (2) soft, elastic straps that fit most arms. We also include a screen protector that covers the front of the Galaxy S3. NOTE: The TuneBand for Samsung Galaxy S3 (SIII) is designed to work with a bare Galaxy S3 *only*. Some customers have reported success installing our silicone skin over their existing Galaxy S3 cases, but this use is unsupported by us. Also, if the included elastic strap is either too long or too short, then please contact us at support [at] grantwoodtechnology [dot] com to arrange a replacement strap. We also mention this in the included thank-you card.