The Circe Helios is a completely versatile Tandem in one size to fit 3 years olds to 6 foot plus: so one size does fit all!
Also available in a portable version and an electric assist. If there was ever a Tandem that fitted the bill for those unsure of taking the plunge into tandeming this is certainly one to go for.
The Helios comes in a number of standard models, with specifications designed to cover most uses. However, it is possible to customise the Helios if your needs aren’t met directly by one of the standard models.