The Tumbl Trak Boundex Cuddle Box turns movement into something that feels like a full-body hug. Kids bounce, stretch, push, pull and settle into its layers of responsive Lycra, and each of those actions delivers the deep proprioceptive and vestibular input that helps a developing nervous system feel grounded, organized and ready to engage.

It's among the most clinically respected sensory motor tools available for early childhood, and it's also one of the most genuinely fun. We offer it to families, schools and therapy teams across Canada & the US, and you'll see why the moment a child climbs in.

Eileen Richter, MPH, OTR/L, FAOTA, developed this patented cuddle box (Patent No. 9,314,389 B2) after more than 50 years in pediatric occupational therapy. Her hands-on work in children's hospitals, preschools and neonatal intensive care units shaped the design, which began as the "Baby Boundex" for clinical settings. Today, families, traveling therapists and OT clinics use it worldwide.

Why Families & OTs Choose the Tumbl Trak Cuddle Box

Picture a toddler who spots the Lycra and simply dives in. That's the whole idea, and it's what makes this Tumbl Trak cuddle box so easy to love in a home or therapy room.

• Self-Directed Exploration - There's no rigid set of instructions to follow, so children find their own way in and build movement confidence through play rather than guided drills.
• Supports Both Arousal and Calming - The same Lycra layers that invite active bouncing and climbing become a cozy retreat for sensory regulation, giving a child a place to settle whenever they need it.
• Travels Wherever Therapy Happens - The frame breaks down in minutes with Easy Adjust D-2 Knobs and slips into the included carry bag, so it's just as practical for home visits and clinic sessions as it is for school-based OT.
• Tool-Free, Low-Barrier Setup - Quick assembly without tools means this sensory motor equipment actually gets used instead of sitting in a cupboard.
• Built for Safe Everyday Use - Foam-padded cross braces, securely fastened Lycra layers and rubber feet keep the structure stable, so the frame stays steady even during energetic play.
• Easy to Maintain - All three Lycra layers are machine washable, and replacement Lycra sets are available separately, so your cuddle box stays fresh and ready for the next session.
• CPSIA Compliant - Every material meets US consumer product safety requirements, which gives purchasing teams and institutional buyers the documentation they need.

What's Built Into This Lycra Sensory Cuddle Box

Underneath all that stretch is a carefully engineered frame.

• Sturdy Steel Frame with Foam-Padded Cross Braces - Heavy-duty steel with foam padding along the perimeter rails creates a stable, impact-resistant structure, so children can push and pull with full force without the frame shifting.
• Three Layers of Responsive Lycra - Multiple layers of stretchy, machine-washable sensory Lycra are secured at the corners to deliver graduated resistance that responds to every push, stretch, weight shift and resting position.
• Easy Adjust D-2 Knobs - Quick-release knobs let you fully disassemble the frame in minutes without tools, making it a sensory tool that moves with families and traveling therapists.
• Included Storage and Transport Bag - A dedicated carry bag holds the disassembled frame, so it stores neatly in a closet or rides in the back of a car with no extra packing.
• Rubber Feet - Stabilizing rubber feet stop the frame from sliding on hard floors, keeping everything safely in place during weight-bearing, rocking and directional movement.
• CPSIA-Compliant Materials - All materials meet Consumer Product Safety Improvement Act requirements, confirming they're safe for children and meet the purchasing standards schools, clinics and institutions expect.
• Designed in the USA - Eileen Richter developed and designed it in the United States, drawing on decades of pediatric clinical practice to shape every detail.

Motor & Sensory Skills Kids Build in the Boundex

Every climb and wobble is doing quiet developmental work.

• Proprioceptive & Vestibular System Awareness - Both sensory systems activate at once as children move, weight-shift and balance, building the body awareness and spatial grounding that support regulation and focus.
• Fine & Gross Motor Skills - Grasping, weight-bearing, pushing, pulling and symmetrical full-body movement in every direction (top to bottom, left to right, front to back and rotationally) develop the coordinated movement patterns that underpin daily physical activity.
• Core Strength, Balance & Coordination - The stretch of the Lycra challenges core muscles while shoulders, arms, hands, hips, knees and feet work to stabilize, helping children refine balance and coordination as they play.
• Respiratory & Cardiovascular System Awareness - Engaging the core and moving actively inside the Lycra encourages expanded, deeper breathing, which supports better breath control and freer vocalization.

A Sensory Cuddle Box for Autism and Every Young Mover

Being told to calm down is very different from being given a place where calm comes naturally. Deep pressure from the layered Lycra and gentle vestibular input from rocking and bouncing are sensory experiences many children seek out on their own.

For autistic children, kids with ADHD and anyone with sensory processing differences, that input can support self-regulation, focus and a sense of feeling settled in their own body. It's not about changing who a child is. It's about giving them a joyful, low-pressure space to explore what their body needs, and it fits naturally into a sensory diet planned with an occupational therapist. Neurotypical kids get every bit as much fun out of it, too.

Using the Boundex with a Child Over 40 lbs

We recommend adding a Teddy Bear Mat or another landing mat underneath once a child is over 40 lbs. A good rule of thumb: if a child can climb out on their own or sinks to the floor, the cuddle box is no longer offering its therapeutic benefit.

Who Gets the Most Out of This Cuddle Box

Wondering whether it's the right fit for your space? Here's who we see it working beautifully for:

• Infants from about 7 months through early childhood, with the most therapeutic benefit for children weighing 20 to 40 lbs (roughly 7 months to 4 years old), and support for children up to 100 lbs
• Families building a home sensory space or looking for one versatile tool that travels
• Occupational therapists equipping a clinic or home-visit therapy kit
• Schools and early childhood centers adding sensory motor equipment to calm corners or therapy rooms
• Pediatric physiotherapists and developmental support workers
• Neurodiverse and neurotypical children alike, since this Tumbl Trak favorite is genuinely engaging for any young child who loves to move

• Dimensions: 51" x 51" x 34"
• Weight: 38 lbs
• User Weight Limit: 100 lbs
• Frame: Steel with foam padding on the cross braces
• Lycra: 3 layers, machine washable
• Feet: Rubber
• Knobs: Easy Adjust D-2 Knobs

Tumbl Trak Boundex Cuddle Box Instruction Manual