500ml Silicone Foldable Water Bottle for Sports

I flew for the first time in 20 years, so checked out the internet for tips from frequent flyers. One of them was to use a collapsible water bottle for convenience in packing and to avoid the exorbitant prices they charge for water after the security checkpoint. It worked perfectly! It was light, took up little space in my carry-on, and helped keep me hydrated during my flights. The airports even had water stations that made refilling it a breeze. I would highly recommend getting one if you fly even once or twice a year, especially considering the price. A little convenience for not a lot of money.

Bought these travel water bottle for a proposed trip and am test driving them before I go. Love the idea & they do fold down to a manageable and packable size when empty. I filled one and chilled it in the fridge before drinking and it tasted fine. I like the feel, although it takes a minute to get used to the "jelly" feel as the bottle empties as the walls are flexible. I also half filled one and left it in the freezer, then added water and the result was fine. I found the easiest way to freeze the water in a partially filled bottle was to sit it in a mug to hold it upright, that way you don't block the nozzle with ice. These bottles are nice to drink from, you can squeeze them into your mouth if you want. The flip top cap is surprisingly efficient so you can squeeze air out and close the top and the bottle retains it's smaller configuration. While it is sturdy I wouldn't recommend packing a filled bottle in luggage - that defeats the purpose, but it would be fine for a backpack bottle holder, upright in a carry on, or clipped by the carabiner to a bag - after you've gone through security. The silicone loop is a dandy little device tor holding the folded water bottle together.