Can I attach a rear rack child seat or trailer to the Dubbel?
The rear rack (which is integrated into the frame of the Dubbel) is equipped with easy-fit adaptors, making the act of attaching a child seat such as the Thule Yepp 2 Maxi much more easy.
While the Dubbel does not have any special accommodation for trailers, any trailer compatible with e-bike rear axles should work. A good example would be the Burley Bee kids trailer, which has a 12mm hole on the axle hitch to accommodate an e-bike axle.