Australian company Memobottle made their name producing flat water bottles that more easily fit into crowded bags.

Now the company is producing a cupholder-friendly cylindrical bottle, the Memo Round. Before designing it, they studied the pain points of the category, zeroing in on the following:

"Unscrew the lid [of your average reusable water bottle], and you'll find seals, channels and tight corners that were never designed to come apart. Water sits in them. Mould grows in them. And no amount of rinsing gets it out."

The company thus designed the lid of their Memobottle Round to use a minimum of components, all of which can easily be detached for cleaning. "The lid comes apart in three pieces, in three seconds. Every part that touches your water can be reached, washed and dried, so mould and muck have nowhere to build up."

The three pieces are the mouthpiece, the lid itself, and an internal plug that holds both the mouthpiece and the stainless steel straw in place.

Assembled, the mouthpiece rotates into its drinking and stowage positions. The designers have added detentes that make the mouthpiece audibly click as it locks into either position.

The video shows how the lid disassembly:

The Memo Round has been successfully Kickstarted, with six days left to pledge at press time. The 700mL (23 oz) version is going for $31, and it's $40 for the 1L (33 oz) model. They expect to ship them next month.