Carry the legacy of American steam wherever the daily grind takes you. Whether you're heading to the gym, the job site, or tracking the mainline, the Big Boy Classic Chalk Logo Under Armour® Backpack is built for heavy-duty discipline and relentless forward momentum.
Featuring a sleek design, this premium pack proudly displays the iconic "Big Boy" chalk-style script—the exact classic logo recognized by railfans worldwide from the front of the legendary Union Pacific locomotive. It is engineered with UA Storm technology to deliver an element-battling, highly water-resistant finish, ensuring your gear stays protected in any weather. Anchored by the silver Under Armour logo and vertical text, this exclusive release from Broken Knuckle Apparel combines rugged performance with true heavy iron heritage.
Iconic Heritage Graphic: Features the unmistakable, classic white "Big Boy" chalk-script logo on the top front panel.
• 93% polyester, 7% nylon • Highly water-resistant and stain-resistant UA Storm fabric • Dimensions: H 20.1″ (51.1 cm), W 12.6″ (32 cm), D 6.6″ (16.8 cm) • Capacity: 7.24 gal. (27.4 l) • LEVELED™ strap system for an even weight distribution • Soft-lined laptop pocket that fits a 16″ laptop • Side water bottle pocket that fits a 32 oz. bottle • Secure zip front pockets
This product is made especially for you as soon as you place an order, which is why it takes us a bit longer to deliver it to you. Making products on demand instead of in bulk helps reduce overproduction, so thank you for making thoughtful purchasing decisions!
