Buddy, that's not the weight of this product but 100 kg is the maximum limit of the weight that you can place on this bed.
the maximum weight on the bed/recliner is 100kg (220lb)
Source
Means, this is not suitable for the people who weigh more than 100 kg.
Oh ok, I got it now.
I feel sorry for fat people, if they buy this backpack, they can't use it as a bed, because bed broken = backpack broken too.