Answer: bulkiest

AnswerCrossword Clue
BULKIESTHardest to ship, say
BULKIESTHardest to carry, perhaps
bulkiest(of a person) Heavily built
bulkiestBULKY, having bulk
bulkiestTaking up much space, typically inconveniently; large and unwieldy
bulkiest(of clothing) Made of a thick yarn or fabric