Bag-In-A-Bottle. Two best sellers combined into one. The String-A-Sling Backpack inserted into the Wide-Mouth Big Bottle. Bottles are intended for cold beverages only and should not be stored near extreme heat. Hand wash only. Not dishwasher safe or microwavable. 8-7/16" tall; 3-1/2" bottom dia. bottle 14-3/4"w x 18-3/4"h flat bag.