Platypus Platy Collapsible Bottle

1. Slate.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

3. HuffingtonPost.com

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

4. Amazon.com

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

5. Backcountry.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