Just ask yourself, with your "normal" garment, when was the last time:

• You leaned over and whatever was in your pocket fell out?
• You had to decide what you can carry because your “normal” clothing didn't have enough pockets?
• Your pockets weren't deep enough or designed to hold what you wanted to carry?
• Your cell phone died and you forgot your auxiliary battery to charge it?
• You had to carry a bag or worse yet, wear a fanny pack, just so you could have the things wanted with you at all times?