Magic Armor

Magic armor weight and effect on movement is determined as per the DMG 28 rule, not the PHB 36 rule. It reduces encumbrance by half, and bulkiness by one step.1) This is one of those cases where the books just have conflicting rules. The DMG was published later, and we feel like its rule plays better than completely weightless armor. Special, truly weightless armor could of course be created by the DM as a special magic item.

Magic armor will magically fit a creature within the general height range of the race it was made for.2) Rolled randomly, as per the “TREASURE” section in the DMG. Dwarven armor will not resize to fit a human, for example.

As mentioned in Classes, half-elves can wear magic armor fit for humans or elves, unless the armor's description explicitly indicates that half-elves are separate from elves and humans in that matter.

Special UA armor like elfin chain and full plate is typically only available as magic items.3) This is how we've chosen to implement these items. Players cannot purchase them normally. This has worked out very well.