Nathan Adjustable Fit Zipster Color:Sailor Blue is classified as a polyol

is classified as a polyol

one size fits all

World Athletics-approved

comfortable and focused

Bluetooth® compatible with the Therabody app

Nathan Adjustable Fit Zipster Color:Sailor Blue is classified as a polyolStretch, stroll, or score your best day without worrying about your running accessories. The Adjustable Fit Zipster belt pack from Nathan is as easy as one, two, three with the simple clip and easy adjusting belt. The same comfort and low profile design combined with easy on and perfect fit make this a must have for carrying your phone, keys and other necessities for race or recovery day. With the simple clip and easy adjusting belt, you can size your