This is a kind of envelope called shugi bukuro which is used to enclose wedding gift money.
Japanese Wedding
Japanese Culture Links
Japanese Wedding
Japanese Culture Links
Japanese Shugi Bukuro - Wedding Money Gift Envelope Japanese Cultural Item Pictures
From Shizuko Mishima, About.com
Japanese Shugi Bukuro - Wedding Money Gift Envelope
Photo (c) Shizuko MishimaSuggested Reading
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