I KNOW JACK Classic T Shirt
Black Heather / S
$28.00 USD
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LOOK LIKE AN EXPERT. ACT LIKE YOU HAVE A CLUE!
Every great adventure starts with a questionable decision and the right T-shirt!
The I KNOW JACK Classic T-Shirt is perfect for road trips, backyard adventures, or just standing around looking like you know something nobody else does.
It's comfortable, stylish, and practically guaranteed to make people question your qualifications!
I KNOW JACK — Expert in Everything. Qualified in Nothing.
• 100% combed and ring-spun cotton (Heather colors contain polyester)
• Fabric weight: 4.2 oz./yd.² (142 g/m²)
• Pre-shrunk fabric
• Side-seamed construction
• Shoulder-to-shoulder taping
• Blank product sourced from Nicaragua, Mexico, Honduras, or the US
Disclaimer: The fabric is slightly sheer and may appear see-through, especially in lighter colors or under certain lighting conditions.
I KNOW JACK Classic T Shirt
$28.00 USD
Every great adventure starts with a questionable decision and the right T-shirt!
The I KNOW JACK Classic T-Shirt is perfect for road trips, backyard adventures, or just standing around looking like you know something nobody else does.
It's comfortable, stylish, and practically guaranteed to make people question your qualifications!
I KNOW JACK — Expert in Everything. Qualified in Nothing.
• 100% combed and ring-spun cotton (Heather colors contain polyester)
• Fabric weight: 4.2 oz./yd.² (142 g/m²)
• Pre-shrunk fabric
• Side-seamed construction
• Shoulder-to-shoulder taping
• Blank product sourced from Nicaragua, Mexico, Honduras, or the US
Disclaimer: The fabric is slightly sheer and may appear see-through, especially in lighter colors or under certain lighting conditions.
Size guide
| LENGTH (inches) | WIDTH (inches) | CHEST (inches) | |
| XS | 27 | 16 ½ | 31-34 |
| S | 28 | 18 | 34-37 |
| M | 29 | 20 | 38-41 |
| L | 30 | 22 | 42-45 |
| XL | 31 | 24 | 46-49 |
| 2XL | 32 | 26 | 50-53 |
| 3XL | 33 | 28 | 54-57 |
| 4XL | 34 | 30 | 58-61 |
| 5XL | 35 | 31 | 62-65 |