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Under Armour

Under Armour Unisex-Adult Undeniable Sackpack , Black (001)/Metallic Silver , One Size Fits Most

  • Based on 2,301 reviews
Condition: New
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This item's return window has been extended for the holiday season: Returnable until Jan 31, 2026

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Availability: 12 left in stock
Fulfilled by ATB Curated Brands
Arrives Sunday, Jan 11
Order within 19 hours and 43 minutes
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Size: One Size Fits Most


Color: Black (001)/Metallic Silver


Features

  • UA Storm technology delivers an element-battling, highly water-repellent finish
  • Tough, TPU-coated bottom panel extends up the front for added durability
  • Full-length, front insulated zippered pocket doubles as a water bottle sleeve or valuables pocket
  • Fleece-lined front valuables pocket
  • Adjustable cording straps can easily be tied for a custom length & fit
  • Molle webbing on front panel for additional attachment points

Description

Sure, sackpacks are easy, but we amped up the performance with an insulated water bottle sleeve and UA Storm so rain rolls right off. UA Storm technology delivers an element-battling, highly water-repellent finish. Tough, TPU-coated bottom panel extends up the front for added durability. Full-length, front insulated zippered pocket doubles as a water bottle sleeve or valuables pocket. Fleece-lined front valuables pocket. Adjustable cording straps can easily be tied for a custom length & fit. Molle webbing on front panel for additional attachment points. Custom UA sternum clip. Dimensions When Full: 2.4"W x 21.1"H x 15.4"L. Volume: 20L. 100% Polyester

Product Dimensions: 2.4 x 15.4 x 21.1 inches


Item Weight: 10.2 ounces


Department: unisex-adult


Manufacturer: Under Armour


Item model number: 1369220


Age Range Description: Adult


Item Weight: 0.29 Kilograms


Number Of Items: 1


Units: 1 Count


Capacity Total: 25 Liters


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Jan 11

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews

    • The Perfect Drawstring Bag - Durable and Functional!
Size: One Size Fits Most Color: Pitch Gray Medium Heather (012)/Black
I've had several drawstring bags over the years, but this Under Armour one is by far the best I've ever owned. First and foremost, the organization is fantastic. The large main pocket is spacious enough to hold my gym clothes, shoes, and a towel with room to spare. What really sets this bag apart, though, are the extra pockets. The small pocket at the top is a game-changer—it's perfect for my keys, wallet, and phone, so I'm not digging around in the main compartment trying to find them. The insulated water bottle pocket on the front is another brilliant feature. It keeps my drink cool and prevents it from leaking all over my other items. The quality is top-notch. The material feels robust and the drawstrings themselves are high-quality and very durable. They're not that flimsy, thin cord you find on cheaper bags. They feel like they'll last for years of heavy use. I did find that the strings were a little long for my frame, but it was an easy fix. I simply tied the knot a bit higher up, and now it fits me perfectly. Overall, this bag is incredibly well-thought-out and built to last. If you're looking for a reliable, multi-functional drawstring bag for the gym, school, or travel, look no further. This is the one! ... show more
Reviewed in the United States on August 13, 2025 by R Portra
    • Great work out bag
Size: One Size Fits Most Color: Black (001)/Metallic Silver
I needed a workout bag that wasn’t too big—just something I could throw over my shoulder and go. I expected just one main pocket, so I was pleasantly surprised to find additional compartments. My water bottles are usually too tall or bulky for most bags, but this one fit a decent-sized bottle and even zipped closed. I was also able to fit a pair of shoes and a change of clothes with no problem. I really like the small strap on the front—it’s a nice touch. Overall, the material feels sturdy and not cheap at all. If you’re looking for a compact, reliable bag to carry your essentials while you work out, this is a solid option. ... show more
Reviewed in the United States on July 14, 2025 by Duncan
    • Durable and Spacious Backpack
Size: One Size Fits Most Color: Black (001)/Metallic Silver
Great quality backpack—lightweight yet durable. Plenty of compartments, comfortable straps, and stylish design. Perfect for daily use or travel.
Reviewed in the United States on August 22, 2025 by AS OM
    • Nice back sack
Size: One Size Fits Most Color: Royal (400)/Metallic Silver
It's a great bag lot of space to put your stuff in
Reviewed in the United States on October 23, 2025 by Walter Matthews
    • The BEST Cinch Bag!!
Size: One Size Fits Most Color: Royal (400)/Metallic Silver
Review Image by JessK JessK
Review Image by JessK JessK
Review Image by JessK JessK
Review Image by JessK JessK
This is the perfect little backpack cinch bag!! My son needed a smaller backpack bag for school sports for snacks, water and headphones, etc. it has a water bottle insulated zipper pocket in the front, small padded zipper pocket for phone and big cinch bag! I love that the straps are each 1 spring so no sideways longer one side messy strings! The blue is a perfect Royal blue color. ... show more
Reviewed in the United States on October 1, 2025 by JessK JessK
    • Great bag for storing clothing and keys and wallet while at the gym
Size: One Size Fits Most Color: Pitch Gray Medium Heather (012)/Black
I use this bag for taking items to the gym and storing them in the locker while I work out. Has a soft line pocket to put your phone, keys, and earbuds in with a secure zipper. Also has a pocket for a water bottle on the front. The inside compartment is large but does not have a zipper. You just cinch it closed. ... show more
Reviewed in the United States on September 30, 2025 by TomC
    • Much bigger then normal draw string bags
Size: One Size Fits Most Color: Pitch Gray Medium Heather (012)/Black
Much bigger than the normal draw string bags! My son loves how big it is. He’s able to fit everything he needs in it for weight class at school. Great quality. Highly recommend material is very sturdy and thick! Well worth the value! Will definitely buy another in the future when needed.
Reviewed in the United States on July 9, 2025 by Mo
    • Lightweight
Size: One Size Fits Most Color: Black (001)/Metallic Silver
Perfect, light weight bag for my middle schooler. Easy to use, has a nice little clip in the front and helps take some pressure off the back if he needs to load it up for classes that day. Has an insulated pocket in the front for a water bottle and the bag itself is waterproof.
Reviewed in the United States on September 30, 2025 by Ashley Reinhart

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