The Platypus Platy Collapsible Bottle fills an interesting niche -- it's flexible and collapsible rather than rigid. Made from polypropylene plastic that doesn't contain bisphenol A (BPA), the bottle is durable, light and folds when empty. Some sports enthusiasts prefer the Platy to heavier aluminum and plastic bottles. "When emptied, a Platypus takes up no more room than a single, folded-up section of newspaper," says Slate.com reviewer Laura Moser. Some reviewers note that it's hard to use the Platypus bottle with just one hand, and they say liquid can slosh around when it's less than half full. If you prefer a rigid water bottle, reviewers also like the Nalgene OTG - On The Go (*Est. $10 for 24-oz. bottle) and the CamelBak Better Bottle (*Est. $14 for 25-oz. bottle).
The best review of the Platypus Platy we found is on Slate.com, where several bottles are rigorously tested. A slew of sports-enthusiast websites, including BackCountry.com and BackpackGearTest.org, also weigh in, as do owners posting at Amazon.com.
Slate.com's Laura Moser says "for hydration on the go, Platypus has no peer." On the downside, the bottle is "prone to splashes and spills."
Review: Message in a Bottle, Laura Moser, Aug. 21, 2007
2. Time magazine
Time magazine names the Platypus Platy one of the "top 5 eco-friendly water bottles." Reviewer Hilary Hylton calls it a "little gem" and says it's a great choice for those who want to pack light.
Review: Top 5 Eco-Friendly Water Bottles, Hilary Hylton, Dec. 11, 2008
HuffingtonPost.com lists nine reusable bottle favorites and allows readers to score them on a scale of 1 to 10. Author Lindsay Armstrong doesn't clarify exactly how the bottles were chosen for this list, but the implication is that they've been deemed in some way "the best" by editors. Readers give the Platypus Platy bottle a respectable 7.3 while many competitors scored around 5 or 6.
Review: The Best Reusable Water Bottles, Lindsay Armstrong, Jan. 29, 2010
Reviewers here are very positive, overall, about the Platypus Platy. Complaints include that the bottle is hard to wash and dry and not durable enough. Other users like the bottle's lightweight and compact design.
Review: Platy Soft Bottle with Closure Cap, Contributors to Amazon.com
More than 35 owners posting here give the Platypus Platy excellent reviews, citing its portability, durability and simplicity. Owners post photos and videos of their Platy bottles in use, which may be helpful for buyers who are wary of switching to this unusual bottle.
Review: Platypus Platy Plus Bottle, Contributors to BackCountry.com
6. Backpack Gear Test
This highly detailed review written by owner Sheila Morrissey lauds the Platypus Platy for its collapsible design, versatility and toughness. Though the review is older, it appears the Platy has changed little in the intervening years.
Review: Platypus Platy Bottles, Sheila Morrissey, July 31, 2007