The capacity of the Radiant Mega Sling and the Radiant Hybrid Sling is comparable, but the Hybrid is more geared towards organizing files and magazines.
I am a fan of NIID design but their service is too bad,order 1 mega sling and add-ons and they just send me the bag without add-ons.Try contact with them but they keep silence without reply,maybe 50$ is expensive and they try to steal it