▼70g/㎡ ▲50g/㎡ ▼80g/㎡ ▲70g/㎡ ▼85g/㎡ ▲80g/㎡ ▼100g/㎡ ▲85g/㎡ ▼120g/㎡ ▲100g/㎡ ▼地紋入り封筒 ▲120g/㎡ ▼透けない封筒 ▲地紋入り封筒