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Mammoth Cave “426 Miles Underground” T-Shirt | Kentucky National Park Caving Tee

Mammoth Cave “426 Miles Underground” T-Shirt | Kentucky National Park Caving Tee

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Elite
$27.99 USD
$27.99 USD
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⚡ Ships in 2–5 days. Limited runs—don’t miss out!

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426 Miles Underground Tee

Honor America’s longest cave system in everyday wear with the 426 Miles Underground Tee. Featuring a bold graphic inspired by Mammoth Cave’s vast passages, this shirt blends adventure with Kentucky pride. Soft, breathable, and cut for a modern unisex fit, it’s built for hikes, road trips, and weekend exploring.

Why You’ll Like It

  • Celebrates Mammoth Cave, the world’s longest known cave system
  • Perfect for hiking, camping, road trips, and souvenirs
  • Ultra-soft tri-blend fabric for all-day comfort
  • Lightweight and breathable—ideal for warm adventures
  • Unisex fit makes it versatile for all explorers

Fabric & Fit

  • 50% polyester, 25% combed ring-spun cotton, 25% rayon
  • Fabric weight: 3.4 oz/yd²
  • Pre-shrunk to maintain shape
  • Side-seamed construction for durability
  • Unisex retail sizing

Made to order to reduce waste and overproduction. Ships in 2–5 business days after purchase.

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

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  • 🧵 Premium Fabric

    Clothing that you're going to love the way it feels

T-SHIRT TIER

  • 🥉 Basic Tee

    Tried-and-True Durability
    The Basic tee is the dependable favorite—100% cotton with a classic jersey knit feel. Heavier at 5 oz/yd² for extra toughness, it holds its shape and color like an old-school favorite. Pre-shrunk, double-stitched, and ready for every wash, wear, and tailgate.

  • 🥈 Classic Tee

    Premium Cotton Performance
    Our Classic line uses Airlume-combed cotton and modern blends for the perfect balance of softness and structure. At 4.2 oz/yd², it’s the sweet spot: soft enough for everyday comfort, sturdy enough for game day after game day. Shoulder-to-shoulder taping and tear-away tags keep it clean and ready for anything.

  • 🥇 Elite Tee

    Luxury Tri-Blend Comfort
    Feather-light and silky soft—our Elite tee is made from a 50/25/25 tri-blend of polyester, combed ring-spun cotton, and rayon. At just 3.4 oz/yd², it feels broken-in from day one yet stays strong after countless washes. Pre-shrunk, side-seamed, and built for that athletic-fit drape you only get from premium blends.