Workout Waterproof Sandproof Dustproof Bag Accessories suitable for the Sony Walkman NW-S716F Special 3.5mm pass through connection enables headphone connectivity to the Walkman NW-S716F while maintaining water tight integrity inside Ideal support for device with internal 79.9 x 42.7 x 12.3 mm internal dimensions Made of powerful TPU material which is 10 times stronger than cheaper vinyl versions Three carrying alternatives (one neck and two arm strap styles) are included Ultra clear front window lets you use your buttons and screen as normal