Heirlooms: Items that are Bind-on-Account so you can pass them on to alts. They scale with level, so you can use a weak version with a low-level character and it will improve as you do. Many also have a +XP bonus on them. However, they only level across a given range, so at max level you'll be wanting 'real gear' as you leave the heirloom behind. There's a specific colour signifying that, a sort of off-brown.
I'm *assuming* UBER'S is UBRS, Upper Blackrock Spire. A vanilla dungeon that was unusual in that it was intended to be handled by a small raid, without formally being a raid - while Lower Blackrock Spire was a conventional five-man but both shared the same actual locale; at the start you'd go right for LBRS, left for UBRS. Anyhow, UBRS has now been updated for 100 as a 5-man with all-new bosses.