Anton Koivisto is a Finnish entrepreneur and parent. He founded Outgrow Solutions Oy in 2026 after experiencing firsthand the frustration of kids clothing sizing — buying clothes in the wrong size, losing track of what fits, and wasting money on items that were outgrown before they were worn.
With a background in economics and a problem-solver's mindset, Anton built Outgrow from an idea into a functioning platform — working with developers to bring the sizing database, interactive widget, and iOS and Android apps to life. The sizing data published on tryoutgrow.com is verified by Anton against official brand sources, cross-referenced with real parent fit feedback, and modelled using statistical simulation to identify genuine sizing patterns across brands.
Anton writes and publishes all size guides on tryoutgrow.com with a commitment to accuracy over speed — every data point is verified before it's published.
Areas of expertise
- Kids clothing sizing across 30+ major UK and US brands
- Statistical analysis of brand sizing consistency
- Wardrobe management and kids clothing longevity prediction