I was looking around at Dick's Sporting Goods today for running shoes and other running gear. I found they had training masks. Have you ever used them? What has your experience been
![Amazon.com | New Balance Men's 5000 V1 Spikeless Running Shoe, Yellow, 9 B US | Track & Field & Cross Country Amazon.com | New Balance Men's 5000 V1 Spikeless Running Shoe, Yellow, 9 B US | Track & Field & Cross Country](https://m.media-amazon.com/images/I/71YEhszEJ3L._AC_UY1000_.jpg)
Amazon.com | New Balance Men's 5000 V1 Spikeless Running Shoe, Yellow, 9 B US | Track & Field & Cross Country
![Amazon.com | New Balance Men's Long Distance 5000 V1 Running Shoe, Blue/Yellow, 12.5 D US | Track & Field & Cross Country Amazon.com | New Balance Men's Long Distance 5000 V1 Running Shoe, Blue/Yellow, 12.5 D US | Track & Field & Cross Country](https://m.media-amazon.com/images/I/81flqaZAzNL._AC_SL1500_.jpg)
Amazon.com | New Balance Men's Long Distance 5000 V1 Running Shoe, Blue/Yellow, 12.5 D US | Track & Field & Cross Country
![Amazon.com | New Balance Men's Long Distance 5000 V1 Running Shoe, Blue/Yellow, 12.5 D US | Track & Field & Cross Country Amazon.com | New Balance Men's Long Distance 5000 V1 Running Shoe, Blue/Yellow, 12.5 D US | Track & Field & Cross Country](https://m.media-amazon.com/images/I/813E9nRh+JL._AC_SX395_.jpg)