12|12 Our Story

About the Founders

AmyKoenigsberger | Founder

Several years after starting her career in the fashion industry straight out of college, Amy became pregnant with her first son.  By the time he was three, he had developed severe allergies to tree nuts and soon Amy and her husband learned that both of their children suffered from multiple food and skin allergies. So Amy began her mission to find clothing that was both organic and gentle on her boys’ skin, while not compromising wearability, or the modern, clean aesthetic she was looking for. When everything in the market fell short of Amy’s expectations, she took her own fashion industry experience and joined together with her friend Stacey to launch 12|12.

Stacey Effman | Founder

After discovering a passion for graphic design, Stacey began designing a line of hand-silkscreened, charitable t-shirts. While researching the very best fabric on which to print her designs, she became obsessed with the softness and quality of pima cotton. Stacey shared in Amy’s interest in quality, craftsmanship and the modern organic clothing for babies. It was the desire to create something better that brought them together and compelled them to create 12|12.

Through years of growth—including long days and late nights with their own babies—they’re dedicated as ever to ensuring that 12|12 continues to set the standard for quality organic clothing for babies and toddlers—so there’s no more guessing in getting them dressed.

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Size Chart
Size Height (inches) Weight (lb)
Newborn Up to 18 5 - 8
0-3 Months 18 - 23 8 - 12
3-6 Months 23 - 26 12 - 16.5
6-12 Months 26 - 29 16.5 - 23
12-18 Months 29 - 31 23 - 27
18-24 Months 31 - 33 27 - 30
2T 33 - 35 30 - 33
3T 35 - 38 33 - 36
4T 38 - 41 36 - 39