I Solemnly Swear That I'm Up To No Good T-Shirt

$ 18.99$ 23.99

Available Options


Wizard Promise Shirt

Do you solemnly swear?

Of course you swear! It's always fun saying those words when checking out a map full of secrets! The "I Solemnly Swear That I Am Up To No Good" shirt is perfect for those who waited so long for their acceptance letter to come via owl post but never did. So, do you solemnly swear that you’ll get this shirt now?

The words that grant access to secrets; I solemnly swear that I’m up to no good. Big changes can only be brought about in the world by stirring up the pot.

Sizing Chart

Please take a look at the sizing chart below:

Length 28 29 30 31 32 33 34
Width 18 20 22 24 26 28 30

5.0 oz. 100% cotton preshrunk jersey Ash is 98% cotton, 2% polyester; Athletic Heather is 90% cotton, 10% polyester

Fruit of the Loom T-Shirt. Double-needle coverstitched front neck Shoulder-to-shoulder tape Double-needle stitched bottom hem and sleeves High-density fabric.


United States: $5.99 for entire order. International: $15 for entire order. Most orders should arrive within 7-14 days in the US, and 3 weeks or more internationally. 


We will gladly refund or exchange items within 14 days of your order that are new and have never been worn if you're not in love with them. Please read our full Return Policy Here.