All-in-One Baby Ball in Train Play Box, Primary Colors

The b is for ball® x Sundae Kids collaboration brings eye-catching illustration and playful function to a new level. This limited-edition “Choo Choo” set includes 3 award-winning b is for ball® toys in vibrant primary colorsred, yellow, and bluenestled inside a whimsical, train-themed box illustrated by Sundae Kids. Winner of the 2025 Red Dot Product Design Award, b is for ball® is an all-in-one toy that grows with your childfrom teether to bath time to stacking and open-ended play. The illustrated “Choo Choo” box features Sundae Kids’ signature storytelling and transforms into a Montessori-inspired ball drop game. With playful characters and delightful surprises throughout, it’s designed to spark imagination, support independent exploration, and encourage rich conversation between parents and children. A joyful fusion of art, design, and functionalityit’s one of the most unique and meaningful gifts you can give a baby or growing family.

About Biggest Little: Biggest Little® began in a tiny Brooklyn apartment, where a family of four discovered something unexpected through their journey into minimal living: their kids played more—not less. Joy returned to the everyday chaos of family life. Inspired by that season, Biggest Little® was born—a mother-founded, sustainability-led brand with a deep commitment to design, reimagining early play through simple, multifunctional essentials that grow with your child. Safe, open-ended, and easy to clean, our products are made to spark curiosity and encourage child-led exploration—while simplifying parenting, elevating family spaces, and honoring the environment we all share.