The first things I looked for was the number of people who have purchased the product and left feedback. I was looking for an average rating to be above 4. My other box to tick was the price. Even though it was not number one thing I looked for, I always ask myself if the price is justified by looking at the product features and reviews. If the product is in a higher price range, it's got to be good, and I'll always make sure to check if it is.
I was blown away by the functionality of this product. Not only does it include 2 big water containers, but it comes with a carbon filter for cases when clean water is not available as can be the case in nature or in countries where water purity is under question. It can filter up to 100,000 litres (26,417 gallons) of water. There are also 6 pre-filters included in the package. The capacity of the containers is also very impressive at 2 litres each. Moreover, it contains a protective mouthpiece to keep bacteria out. This is definitely for you if you consider a serious journey to places you've never been before.
Survivor 2 x 2 Litre Collapsible Water Bottle for Backpacking with Virus Tested Filter
What I love about this bottle is that it has a valve to prevent leaks and a wide spout to fit in small ice cubes and to ensure proper cleaning. The other nice feature is that it can be used both for cold and hot drinks. The bottle is easy to roll up and carry around or just pack up into even a very tight space. It has lots of reviews (over 1,000), with an average score of 4 which works very much in favor of this product.
Nomader Leak and Heat Proof Collapsible Water Bottle for Backpacking
I was very impressed with this item's characteristics and reviews. It states that the bottle is medical food grade, odor free and leak proof. It is also larger than most bottles at 26 ounces capacity. It is heat resistant and can be filled with hot or cold water for a drink or a compress which can be useful if you are into sports. The bottle rolls up for easy storage and is protected by a 2-year warranty.
BPA Free Collapsible Water Bottle for Backpacking and Exercise by Silbyloyoe
With this deal, you are getting not one but two 20-ounce foldable bottles at a very good price. It has an average review score of 4.5 which is high at the 622 purchases I've last checked. The bottles have a retainer to help keep them folded and a clip to attach them to a bag strap or belt for easy access. They can be used in a gym or anywhere you fancy. Although not heavy duty, these items are compact and fulfil the function. And you can freeze them before filling up with water - to enjoy a cold drink!
Two Baiji Collapsible Silicone Water Bottles with Clip and Retainers for Camping and Sports
This is a spacious attachable US designed and made container. Being dishwater safe, it will appeal to many. The cap has a tight seal but is easy to open. The 3-ply material assures its durability. And yes - you can freeze it to keep your drinks cool.
Vapur Wide Mouth Freezable Collapsible Water Bottle for Backpacking