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Spark curiosity with a Letterbox Lab hands-on science kit, delivered straight to your door each month. Every kit includes exciting experiments, designed to inspire young scientists. Plus, free delivery in the UK* and no missed parcels — our kits fit right through your letterbox!
✅ Fun experiments delivered monthly
✅ Perfect for ages 6 to 12
✅ Fits through the letterbox
✅ Free delivery
✅ Fully-illustrated instruction guide
Here's just a taste of what comes through the letterbox each month! ↓
Choose between the Explore Box (3-4 experiments) or the Investigate Box (6-8 experiments). Both kits are designed to build excitement, curiosity, and lifelong learning through hands-on science!
All kits include:
All packed in a collectable box that fits through most letterboxes.
Ready to start your science adventure? Choose your box type and subscription plan!
"I’m really impressed. Literally everything is in the box, and the instructions are clear and easy to follow!"
"Each experiment is in separate labelled bags, and knowing you don't need to buy extra ingredients is fantastic."
"...This is a box that takes science education seriously and doesn’t condescend to, or underestimate children’s ability to understand scientific principles. My son has learned so much from Letterbox Lab – I couldn’t be happier!"
