The mesh around the tights is absolutely life changing. I used to store my gels and supplements in a running belt, and the problem them while running is that you had to fiddle around unzipping and zipping your belt. The mesh has plenty of storage, holds the gels in place, and you have easy access, without disrupting your running flow during a race. I did the London Marathon recently, and these tights were a blessing! If I'd known about tights with mesh storage before, I would have bought them a long time ago!