This running belt keeps 20 oz. of water at your waist for a stable, bounce free long run. The elastic belt adjusts for a perfect fit, and the laser bonded mesh keeps everything light and breathable. When youre thirsty, just flex and twist to release the bottles from the belt. The jet valve technology delivers lots of water in just one squeeze, while the self sealing cap keeps your drink from leaking all over the road. And the 100% BPA free TruTaste materials eliminate any funky plastic aftertaste. Weve also included a pocket for your keys, card and phone. Fits a 26 to 44 waist.