TernX Carry-On: the stroller that is its own cabin suitcase wins Red Dot's top prize

Tack and Hoe Ping, traveling with young children, faced the standard airport ordeal: stroller gate-checked, luggage in hand, toddler in arms. No product combined the two bags, so the couple set out to build one in Australia.

Merge the two bags into one object: a certified stroller that folds around its own packed storage into a regulation overhead-bin suitcase — no gate check, no unpacking.

Years of design, testing and refining produced a patented folding aerospace-grade aluminum frame: press it down and the stroller collapses in seconds with all the baby gear still packed inside, then the handlebar extends again to ride. It is certified for children from 6 months to 22 kg, with an adjustable backrest, reclining seat and UPF 50+ canopy. When Shark Tank came calling with two offers, the founders walked away to stay 100% independent.

TIME named it a Best Invention of 2022; the awards piled up (iF Design Award 2024, German Design Award 2023, Good Design Gold, seven international design prizes in all) and in 2026 it took Red Dot: Best of the Best, the competition's highest tier. Parents call it a 'game changer' for air travel, and it defined a new product category — the carry-on luggage stroller.

The TernX Carry-On started as a personal grievance: founders Tack and Hoe Ping could not find a stroller that could also carry their gear and their child through an airport. The product they built is the only carry-on bag that transforms into a fully certified stroller — it rides in the overhead bin instead of being gate-checked, and it folds without emptying anything out of it.

The mechanism is the idea: an aerospace-grade aluminum frame that collapses in seconds around its own storage — up to 18 pounds of diapers, snacks and toys — then re-extends into a stroller certified for children from 6 months to 22 kg. An adjustable backrest, reclining seat and oversized UPF 50+ canopy make it a real stroller, not a gimmick.

The business decision matched the design discipline. On Shark Tank the founders received two offers and rejected both, later explaining that staying 100% independent preserved the freedom to build the product as envisioned. Recognition followed: TIME Best Inventions 2022, then a string of design prizes, culminating in Red Dot: Best of the Best 2026.

The insight came from lived friction: the founders were the user, so the problem definition (two bags, one parent) was exact rather than assumed.

Folding with the gear still packed removed the step every competitor ignored — parents never have to choose between unpacking and boarding.

Certification for children up to 22 kg made the suitcase form factor legally and practically a real stroller, not luggage with a seat bolted on.

Refusing Shark Tank money kept the company free to defend the category it invented instead of optimizing for a shareholder's timeline.

The strongest product ideas often come from fusing two objects users already tolerate into one: every constraint you remove from the trip (gate check, unpacking, a free hand) becomes the feature list.

The Carry-On has become TernX's flagship, sold direct to parents shipping to selected regions, with a product line expanding around the travel theme (a luggage-stroller pairing). The 2026 Red Dot: Best of the Best — the brand's highest design honor to date — arrived as mainstream press rediscovered the founders' most-quoted decision: turning down every Shark Tank offer. The category the Pings defined, the carry-on luggage stroller, is now a term competitors imitate.