Thank you for the heads up!
Was curious about this as it's about time that i book for the retirees back to Porto (overwinteren) to flee the winter.
And indeed behold ...

flex at €261
Ahum...
Surprisingly there is no allignment between KLM's bundle with HV Transavia's bundle yet ..,
Their HV light: it's only a lady's purse or knapsack
Their HV plus: still only a a lady's purse or knapsack
While at KLM it is for light, standard and standard plus : a lady's purse or knapsack + a carry on cabin item
That'll cause some confusion, and more despair if a HV/KL combo ticket ....
It is interesting concerning KLM:
Light & Standard: no seat selection
Standard Plus : economy comfort seat selection
Flex: Any seat selection