A Baby Ball Set Like No Other

Patented and award winning baby ball that grows with your little one.
Now paired with collectible packaging that transforms into a playful object—brought to life through Sundae Kids’ signature storytelling and whimsical charm.

Child's hand holding a red b is for ball® with a Red Dot Award and A'Design Award Winner logo at the bottom

b is for ball®: A Reinvention of The Classic Baby Ball

Created by a mother who wanted more from less, b is for ball® features patented openable design that transforms into teether, sensory ball, bath squirter and outdoor toy.

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GIF showing how to play with b is for ball® and Sundae Kids toy box - opening the drawer, placing on holes, extending train illustration

More Than a Box: It’s a Toy, a Story, and a Little Surprise

Crafted with premium quality paperboard, each gift box opens into a playful world of wheels, featuring a car, train, and bus. With ball-sized holes on top, it invites ball drop fun and storytelling—encouraging open-ended play long after unboxing.

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Colorful b is for ball® Sundae Kids sets with balls and vehicle illustrations on a multicolored background
Animated illustration of the two artists behind Sundae Kids drawing on a shared desk

Meet The Artist: Sundae Kids

Sundae Kids is a Bangkok-based artist duo known for their minimalist, emotionally expressive illustrations.

Their distinctive storytelling has led to over 3 million followers and collaborations with global brands including Facebook, Valentino, Tommy Hilfiger, Levi’s, and Muji, with work exhibited across Japan, Hong Kong, Singapore, the US, UK, and Thailand.

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Colorful b is for ball® stacked on a white tub with a green curtain and textured wall in the background.

In A World of More, We Create Better

biggest little® is a mother-founded, design-led, sustainability-focused family brand bringing thoughtful design and contemporary art into early childhood through multifunctional playthings that grow with the child.

About Us

Pediatric Experts Approved

“This ball toy is an excellent item that can be used by children of many ages! Starting with infants, b is for ball® can be used as a teether. Toddlers can use this item in the bath, in the playroom, alone, or with others. Older children can use this for creative and imaginative play - the sky's the limit!”

Brianna Maglio, M.S., CCC-SLP

"This toy takes a traditional toy that kids love and turns it into a toy that allows them to explore it by safely mouthing as they're learning to grasp, open, poke, put in, squeeze, stack, throw, etc."

Julie Barry, SLP,Speech Language Pathologist

"b is for ball® enhances fine motor skills, encourages bilateral hand use, and offers limitless tactile exploration opportunities in a compact design."

Elizabeth Kidney, OTR/L, Registered/Licensed Occupational Therapist

green, purple, and orange b is for ball® with 2 ball set simple drawer and 3 ball set L shape packaging

Discover More Colors and Gifting Options

Longing for more colors? Our core collection bring a touch of brightness to your space.

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Frequently Asked Questions

What makes the “Balls on Wheels” collection different from the other b is for ball® collections?

Is the packaging really part of the toy? How does it work?

What age group is b is for ball® best suited for?

What is the ball made of? Is it safe for my child?

Can I gift this collection? Is the box gift-ready?