If you hate putting things in your pockets, If you need an Anti-theft Chest bag securing your phone and wallet in large crowds! If you need hands without interrupting your other work or activities, If you want to be professional runner for marathon,Just get one !!!.Professional Running Chest Pack With Perfect Size 9.5 inch x 5..inch x 1.2 inch , This size is perfect to hold all your daily items like Wallet Phone Power bank Earphone Wet Napkin Hand Sanitizer etc..Comfortable Without Bouncing Chest Bag Win . We always listen to different voice from customers. Here is one customer voice after improvement -"The straps over the shoulders AREN'T elastic - which is good because it cuts down on the bounce & Saq. Straps around body ARE Elastic - which is good to allow different body sizes.".Reflective Material used on the front of the chest pack and backside too. It's for purpose in case lots of runners like running at nights Vest Shape Get Re-designed For back of Body !!!The concept Running Vest & Bag get perfectly connected, more comfortable and professional than a flat cloth panel..Adjustable Straps. All the 4 straps are adjustable so that the bag fits almost any body size no matter strong man or even busty women can wear it comfortably!!!.Compact Men Chest Bags. When you put lots of accessories inside, the bag will NOT be Bloated. The Material we used for this chest pack is Water Resistant and Anti-Scratch Nylon, You will keep your item dry and from rainy day or sharp tools. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.