Hydrovent
The HydroVent Straw Cap features a pressure relief valve that prevents water leakage by automatically releasing excess pressure during travel. With an ergonomic handle for easy carrying, it ensures an explosion-free hydration experience on the go.
NO ONE LIKES A LEAKY BOTTLE.
What’s going on?
The reusable water bottle industry reached a staggering 9.7 billion dollars in 2024*. Many of these bottles feature convenient straw caps, allowing you to easily flip them up for a quick sip.
However, changes in air pressure can cause the air inside the bottle to expand, pushing liquid up the straw and leading to unwanted leaks.
This can lead to embarrassing and potentially dangerous situations for straw cap users.
Leaks Occur With:
Sealed Carbonated Drinks
Gain of Elevation
Rise in Temperature
Options on the Market
HydroFlask Standard Mouth Flex Straw Cap
Price: $14.95
Size: 18 to 24 oz bottle
“Not intended for use with carbonated beverages . . . not intended for use with hot liquids.”
-Hydroflask.com
Stanley IceFlow Flip Straw Water Bottle Lid
Price: $10.00
Size: 17 to 22 oz bottle
“We do not recommend using this item to store carbonated beverages. Doing so may cause pressure buildup, may lead to lid failure and spills or forceful ejection of lid contents which can cause injury”
-Official Stanley Amazon Store
Yeti Rambler Bottle Straw Cap
Price: $13.00
Size: 12 to 36 oz bottle
“Do not use the Rambler® Bottle Straw Cap with hot or carbonated beverages”
-Yeti.com
target users
Flight Passengers
RoadTrippers
Urban Soda Drinkers
How might we design a hydration system that doesn’t Explode Under PRessure?
Design Criteria
Flip straw needs to open without releasing bottle contents
Cap maintains a secure seal, even under pressure
Cap is watertight at any bottle orientation
Functional Ideation
How will it work?
Valve Testing
Filling bottles with carbonated water and measuring pressure with custom caps
—If the bottle isn’t able to build pressure, it won’t spray when the straw is opened
Closed Cap
~3 to 4 PSI
Pressure Valve Cap
~1 PSI
Pressure Maintained at 1 PSI = Viable Solution
Form Inspiration & Ideation
What will it look like?
Organic faces forming sharper edges
