crafted with high quality materials. keeps your device safe from sweat, water, scratches, etc. phone is fitted snugly into its custom shape mold sensitive to the touch for easy accessibility to your phone’s features perfect for any occasion! compatible mp3 and or any phones of within the dimensions: 5.25 x 2.75 x0.25 inches arm length: 11.5in by 22 inch for comfortable and secure grip