Need a free hand? Those 40 oz tumblers can get heavy! Strap on one of these bad boys and you will instantly have a place for your keys, credit card, lip gloss, and more! These Neoprene pouches are water-resistant and adjustable for most cup sizes. 

Details:

* approx 5.3 x 3.9 inches
* Zipper pouch with black hardware
* Adjustable strap to fit various widths
* Stores many small items