Voted One of the 10 Best iPhone Armbands by Mashable, the TuneBand for iPhone 4/4S 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 two (2) screen protectors that cover the front *and* back of the iPhone. NOTE: This TuneBand is designed to work with a bare iPhone 4/4S *only*. Some customers have reported success installing our silicone skin over their existing iPhone 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. If you prefer a TuneBand for iPhone 4/4S in another color (black, glow-in-the-dark, pink, purple, or red), then please search Amazon for "grantwood tuneband iphone 4" and click on the appropriate listing. Clinica Verde is a global prototype of an environmentally sustainable health clinic for women and children living in poverty in Nicaragua. It takes a holistic approach to healthcare for the impoverished, beginning with sustainable design and clinical excellence and extending to the health and nutrition education of our cherished patients. Grantwood Technology makes a donation to Clinica Verde with every purchase of the green TuneBand for iPhone 4/4S. Looking for a TuneBand for the new iPhone 5? Please search for "grantwood tuneband iphone 5" and click on the appropriate listing.