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Order by 1pm PST on 12/17 in the US to Get in Time for Christmas 🎁

Order by 1pm PST on 12/17 in the US to Get in Time for Christmas 🎁

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Mystery Brief 3-Pack
$54 $72

Mystery Packs are the best way to experience some of our favorite throwback prints and colors.

Sizes: View guide
  • No Color colors available in this size.
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Ships only to US & Canada

All sales are final; no returns or exchanges. Does not include our most recent prints or colors.

Product Information +

Embrace the Mystery

Mystery Packs are the best way to experience some of our favorite throwback prints and colors. Just choose how many you’d like and get excited—whatever arrives will be a total surprise.


All sales are final; no returns or exchanges. Does not include our most recent prints or colors.

It’s All in the Details

  • 92% MicroModal® 8% elastane
  • 3x softer than cotton
  • Comfy, durable flatlock stitching
  • Soft, flexible waistband
  • Natural, sustainably sourced fiber
  • Imported
100% Satisfaction Guaranteed
Try MeUndies risk-free today. If you’re not 100% satisfied with your first pair, we promise to make everything right. If you have any questions, before or after purchasing, please let us know!
Free US Shipping & Returns

Orders are processed within 1-2 business days. Expected arrival times vary by location:

  • US: 2-7 business days
  • Canada: 1-3 weeks
  • International: 6-10 business days
Build-A-Pack
Our customizing tool lets you curate your perfect Pack.
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Build-A-Pack
Our customizing tool lets you curate your perfect Pack.
Get Started
Set Packs
Stock up on our best-selling bold and classic colors.
Shop Set Packs
Set Packs
Stock up on our best-selling bold and classic colors.
Shop Set Packs
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