Because materials for clothing such as silk and hemp have much less durability than metal or wood, there is almost no possibility for such materials to survive through the years.
これは衣服の原材料である絹・麻などの繊維は金属・木材に比べて極めて時間経過による劣化が激しく、時代を超えて残ることが殆ど無い為である。