Today only, November 19, 2012, Groupon is offering a $30 Threadless Credit for $15 or $40 Threadless Credit for $19 for a limited time. The voucher’s promotional value ($30 or $40) expires March 22, 2013. Not valid for iPhone cases. Limit 1 per person and one per transaction.

This deal is listed in New Jersey, but can be purchased by anyone regardless if you are a resident of NJ or not.