Trunki was created by inventor and entrepreneur Rob Law, who pitched the ride-on children's suitcase on Dragons' Den.
Law designed Trunki as luggage that children could sit on and ride while travelling. The product was developed by his company Magmatic and became known for its bright colours, distinctive shape and child-focused travel design.
The pitch is remembered because the Dragons did not invest, despite the product later becoming a successful commercial brand. That outcome illustrates an important feature of the programme: appearing on the show can provide publicity even when no deal is agreed.
Trunki is sometimes confused with other colourful products that appeared on the programme, including the Tangle Teezer and Micro Scooter. Those are separate businesses and inventions. The defining clue for Trunki is its combination of a child-sized suitcase and ride-on function.