What's the point of a collapsible water bottle?

When one is going on a trip or otherwise won't have access to clean water, they can keep hydrated by carrying around a water bottle with them.

Common materials for a water bottle include plastic, glass, metal, or a combination of these. Wood, bark, or animal skins like leather, hide, or sheepskin were sometimes used to create water bottles in the past [citation needed]. Disposable and reusable water bottles are available. In many cases, disposable water bottles are offered for sale already filled with drinkable water, whereas refillable water containers are foldable water bottle for sale in their empty form. It has been shown that consumers who switch to reusable water bottles use less single-use plastic and produce less greenhouse gas emissions [citation needed]. There is usually some sort of nutrition facts label on disposable water bottles.

Since 2004, sales of disposable, pre-filled plastic water bottles have grown annually. Spending on bottled water in the United States reached over $11 billion that year. [1] According to the International Bottled Water Association (IBWA), bottled water is becoming increasingly popular because of its portability and ease of use.

For safety reasons, people in nations where the tap water isn't very good would often buy bottled water, which they will often store in large quantities in their homes. In 2010, for instance, Mexico's consumption of bottled water accounted for almost 13 percent of the global total, increasing by an average of 8 percent annually. At an annual pace that's more than twice that of the United States, Mexicans use an extraordinary 61.8 gallons of bottled water per person. While the popularity of bottled water has led to a decline in the growth rate of consumption of soft beverages, the increased usage of single-use personal plastic water bottles has contributed significantly to the country's litter problem (which pose health risks in excessive quantities, as well as the same littering problem).

High-density polyethylene (HDPE), low-density polyethylene (LDPE), copolyester, and polypropylene are all suitable materials for making reusable water bottles. All of them have the benefits of being long-lasting, portable, lightweight, dishwasher-safe, and BPA-free. The flexibility of the material is the primary distinction between the various types of water bottles. The most flexible materials are polystyrene (PS) and ethylene vinyl acetate (EVA), whereas the most rigid are copolyester and polypropylene. read more...