This backpack really works and is super lightweight.  We used it all summer on the golf course/beach.  Fits seveal beverages/food and keeps them cold all day.  Last about 12 hours, and never leaks.  Has a built in bottle opener on back with a zipper that can fit most phones. 
 
Made of 600D snow fabric,thick insulation foam,polyester(inner) material makes this insulated tote long lasting durable,easy to wash.
Insulation:keep your food,baby milk fresh and warm.With an ice pack,the food will keep cold several hours.
The top of the baby bottle bag features a zipper closure to lock in cool, dry air. A buckle handle clips onto totes, diaper bags and strollers.
Multifunction,can be used as a baby lunch bag,baby bottle bag for outdoors and travel.
Stylish: looks like a fashionable handbag.Lightweight,easy to carry it everywhere.