You are downloading the Runtastic Six Pack APPX file v18.104.22.168 for Windows Phone. Runtastic Six Pack is a free and useful Health & Fitness app: Download Runtastic Six Pack: Abs Trainer, Exercises & Custom Workouts and define yourself with Runtastic today! Follow the lead of the Runtastic ... You can now download the offline APPX file to install & try it.
Download Locations for Runtastic Six Pack 22.214.171.124 APPX file
Note: To install it manually from an SD card, you should choose one of the server location above to get the offline Runtastic Six Pack APPX file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.