Carter Kostler, a 15-year-old entrepreneur, created Define Bottle to make drinking water fun and healthy by infusing it with fruits. He pitched his innovative product on Shark Tank in 2014 but left without a deal.
However, the appearance boosted sales, and the Define Bottle made over $1.4 million, landing in stores like Target and Dick’s Sporting Goods. It even collaborated with Carrie Underwood’s CALIA brand.
In 2016, Carter closed the business to focus on his career in the U.S. Marine Corps. As of 2025, the Define Bottle is no longer in operation, but its journey remains inspiring.
Define Bottle Net Worth
| Net worth | $500K (When appeared on Shark Tank) |
| Annual Sales Revenue | $1.4 million |
| Investor | None |
| Founder | Carter Kostler |
| Employees | 1-25 employees |
Define Bottle Pitch on Shark Tank
| Company name | Define Bottle |
| Product | Fruit infuser water bottle |
| Episode | Season 05 Episode 20 |
| Founder | Carter Kostler |
| Asked for | $100,000 in exchange for 20% |
| Final deal | No Deal |
| Shark | None |
| Location | USA |
Don’t miss these product from Season 05
Define Bottle Founder
Define Bottle was founded by Carter Kostler in 2013. Carter Kostler, founder of 1 Teen Entrepreneur and inventor of the Define Bottle, recognized a need for healthier beverage options at his school.
Concerned about childhood obesity, he sought to provide flavorful, sugar-free choices to promote health. His Define Bottle earned recognition from Entrepreneur Magazine in 2013.
Define Bottle’s founder, Carter Kostler, has a net worth unknown as of 2025.
Key accomplishments
| Year | Accomplishment |
| 2013 | The company was given voted one of Entrepreneur Magazine’s Most Brilliant Companies in 2013 |
| 2014 | The company appeared on Shark Tank Season 05 In the four months leading up to filming, Carter made $65,000 in sales. He sold his product both online and in retail stores, including Whole Foods |
Conclusion
Some companies that appear on the show have not achieved great success, and the Define Bottle was one of them. Sometimes businesses don’t succeed because of many reasons.
Sometimes, the deal falls through after the founders say yes on camera. Or, as you’ll see, sometimes things happen to the founders themselves, and they choose to abandon the business.
Anything is possible. However, Define Bottle went out of business in 2016. And the product is no longer available in the market.
