How Fragile Are Picks?

I ordered 2 packs of Dunlop Jazz III picks from Amazon.com. They decided to put them in a box and added some cushioning material:

Wouldn't an envelope have been better?

I would like to note, however, that the picks arrived undamaged. I also ordered some Dunlop Jaxx III XLs (I play bass with those), and they have yet to arrive. I wonder how big the box will be!