16 inch bicycle inner tubes are mainly used on folding bikes (e.g. Brompton - our speciality), childrens bikes and recumbent bikes.

Brompton folding bicycles (our speciality and best selling), use the xx-349 (ISO/ETRTO sizing) tubes such as QTUB, QTUBXL or AV4.

We have these inner tubes with three valve types:
Schrader / Auto / Car type valve - these are generally used on the Brompton bikes
Presta / racing type valves - these are thinner and the top has to be partially undone to allow inflation
Woods / Dunlop valve - old style valves, not seen much these days