70x140...it's in the description 😁

Yes, the baby bed can be converted into a junior bed.

Scope of delivery: bed frame, mattress, height-adjustable slatted frame, 3 slip rungs, canopy holder, bed set (duvet cover 100 × 135 cm, pillow cover 40 × 60 cm, nest and canopy)

According to our information there is no additional possibility to attach this bed to a parent's bed or to convert it into a junior bed.

According to our information, the following is included in the scope of delivery: Bed linen (without ticking), nest, canopy curtain, canopy rod and mattress.

I could not find any information on this from the manufacturer, so unfortunately we have to assume that this is not possible.