CREATE TABLE table_name_67 (earpads VARCHAR, construction VARCHAR, succeeded_by VARCHAR)

What earpads does the headphone with plastic contruction and was succeeded by igrado have?
SELECT earpads FROM table_name_67 WHERE construction = "plastic" AND succeeded_by = "igrado"
SELECT "earpads" FROM "table_name_67" WHERE "construction" = "plastic" AND "igrado" = "succeeded_by"