JZHY Insulated Cooler Bag Waterproof Picnic Cool Cooler Bag with MP3 Wireless Speaker for Hiking Camping Fishing Traveling Large size -- 620D Polyester+PVC lighting material with 39*cm*26cm*23cm large size Super practical -- Lined with waterproof plastic inside, can be a beach bag, Mummy bags Bluetooth speaker -- Outside pocket zips open-close and headphone jack plugs into MP3 player Easy to connect -- Compatible with iPhone, iPad, Samsung,and other smart phone or device Keep cool -- keep your food and beverages cool with this clever cooler