Why choose our product? Lightweight & Water resistant/waterproof: made of lycra with TPU laminated, soft and comfortable; Water resistant/ rainproof/ sweat proof/ dirt proof but NOT 100% waterproof. Also you can wear it under your shirt and then sweat. Clear Window on Front Side: Touch-friendly, especially for some fitness apps which measure distance and progress during workouts .You can make phone calls, emails,GPS and other touch screen functions without pulling your device from the belt.Which means you will never miss your calls,or holding your phone all the time. Headphone Access point & Smart Pocket design: with a headphone cord on side, you can thread your headphones through neatly, and enjoy music while sporting; a independent pocket design which is divided into sleeves, so you can put your phone in one pocket and hold other items in the other,avoiding to get your phone scratched by keys. Fully Adjustable & Reflective border on front: Fit sizes 27" up to 48".The belt is adjustable, and it takes some effort to get the elastic belt through the plastic piece, so you don"t have to worry about it loosening up over time ; High visibility at night,there is the reflective strip so when you wear it at night you can be seen! Fit for almost exercise and big enough for items: walk, bike, play tennis, golf, etc.Because the waist bag is durable, with solid zippers, waterproof, sturdy.The strap is flexible and expandable so even during running it stays in place quite well(never bounce up and down while running).There is plenty of room in the pocket to put in keys,money,chapstick or whatever.