Ideal for training and walking the dog. I can put away all those clunky dog bag holders, treat holders, key holders and blah blah. You can place your phone on the front and close the treat, or just tuck it in the right-hand flap for quick access. Keys are in the back zip, so they're damn safe, and the phone is in the front zip with the pocket rolled up on the side, with a face mask that doesn't look like a bulky donut. Everything fits snugly and doesn't bounce. NOTE MEASUREMENTS must be taken seriously to avoid belt cracking. The design is meant to sit under your ribs and across your hips, so measure across your belly button. I'm not too small in the pants but I followed the measurements after watching the video and realized the design requires a fit so it doesn't bounce. I bought the xs because I have a 27" waist and I'm not happy with that. You completely forget you're wearing a belt and it covers your stomach area nicely so you can wear a sports bra and not be too exposed. It's downright perfect. I would like tube loops like Salomon's which are $10 more expensive, but I'm keeping my $10 and looking for a solution to stash my jacket when it gets colder later in the year.