MADE FOR EVERY SENSORY NEED
Meltdowns
Restlessness
Screen Dependence
Anxiety
Focus Difficulties
How It Works
Three steps to calm
Hold
Place any Kalmzo stone in the palm of your hand. Let the texture do the work.
Self-Regulate
The tactile ridges and patterns send calming signals to the nervous system.
Focus
With sensory needs met, children can redirect attention to learning and play.
Why Kalmzo Works
Designed for real life — at home, school, and everywhere in between
Completely Silent
No clicking, spinning or noise. Perfect for classrooms, libraries and quiet spaces.
Screen-Free
Genuine hands-on engagement without devices or apps. Supports healthy boundaries.
Classroom-Approved
Discreet enough for use during lessons. Trusted by SEN teachers and SENCO professionals.
Travel Friendly
Compact and lightweight. Fits in a pocket, bag or travel kit without adding bulk.
Easy to Clean
Fully washable materials. Hygienic and safe for daily use by multiple children.
Durable Materials
Built to last through everyday use. Soft yet robust enough for energetic hands.
All Ages Welcome
Suitable for children aged 3+ and adults alike. Effective sensory support at any age.
Certified Safe
EN71 certified, BPA-free, non-toxic. Tested to the highest UK safety standards.
See How We Compare
| Feature | Kalmzo (Sensory Worry Stones) | Fidget Spinners | Stress Balls | Screens & Apps |
|---|---|---|---|---|
| Silent in class | ||||
| Multiple textures | ~ | |||
| Screen-free | ||||
| Washable & hygienic | ~ | ~ | ||
| Safe for ages 3+ | ~ | |||
| EN71 Certified | ~ | ~ | ~ | |
| (OT-informed) | ~ | ~ | ||
| Teacher approved | ~ |
Frequently Asked Questions
Kalmzo Sensory Worry Stones are suitable for children aged 3+ and adults. They are made from BPA-free, non-toxic materials. Adult supervision is recommended for children under 3.
Yes. They are designed to provide calming tactile sensory input for children with autism, ADHD, anxiety, and other sensory needs. Every child is different, so experiences may vary.
Yes. They are completely silent and discreet, making them ideal for classrooms, homework, travel, and quiet environments.
Wash with warm water and mild soap, then allow them to air dry.
We offer a 30-day returns policy. Please see our Returns Policy page for full details.
Orders are dispatched within 1–2 working days and typically arrive within 3–5 working days in the UK.
Shop with Complete Confidence
Free UK Delivery
Free standard delivery on all UK orders. Dispatched within 1–2 working days so your tools arrive quickly.
Secure Checkout
All payments are encrypted and processed securely. We accept all major cards and Apple Pay.
30-Day Returns
Not satisfied? Return your order within 30 days for a full refund — no questions asked, no hassle.
UK-Based Support
Our friendly team is based in the UK and ready to help. Real people, real answers — usually within hours.