Created by sisters. Inspired by our kids. Built for yours.
We’re two sisters who started Simply Undefined with a shared dream—to create something meaningful for our own families, and now, for yours too.
Our very first idea? A calming kit. Simple, sensory, and full of heart. We wanted something to help our kids feel grounded during overwhelming moments—something that didn’t require a screen or a schedule—just hands-on calm. From those early kits came our signature sensory dough jars, soothing essential oil rollers, and coming soon… our very own weighted plush line, designed for comfort and emotional support.
Every product we create is rooted in what we needed as moms: tools that help kids regulate, explore, and reset—without pressure or perfection. Our collection is loved by toddlers, tweens, and teens—and especially embraced by our neurodiverse community. Whether navigating big emotions, sensory sensitivities, or just the ups and downs of everyday life, we create with all kids in mind.
We named our brand Simply Undefined because we believe calm looks different for everyone. Whether it’s squeezing dough, rolling on a grounding scent, or curling up with a weighted friend, we want every child—neurotypical or neurodiverse—to find their own version of peace.
We’re proud to be a sister-owned company that’s growing right alongside our kids—and yours.
With love,
Kelly and Christy
Co-Founders, Simply Undefined
BE CALM. BE BRAVE. BE YOU.
Encourage Sensory Exploration
Our sensory kits are designed with all children in mind, including those who are neurodivergent, sensory-seeking, or need extra support with regulation and focus. Whether it’s a moment of calm for an overstimulated child, a way to build fine motor skills, or simply a fun, hands-on activity, our kits create inclusive, purposeful play for kids of all abilities. Because every child deserves to play in a way that feels right for them.
Supports Self-Regulation & Coping with Overstimulation
Encourages Problem Solving & Motor Skills
Reviewed & Tested by Parents
Engaging, Fun Materials