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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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Returnable until Jan 31, 2025

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

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Availability: In Stock.
Fulfilled by Amazon
Arrives Saturday, Sep 20
Order within 4 hours and 33 minutes
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Color: Black (001)/Metallic Silver


Size: One Size Fits Most


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


Country of Origin: Indonesia


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: Saturday, Sep 20

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.

  • Klarna Financing
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  • Affirm Financing
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  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Great work out bag
Color: Black (001)/Metallic Silver Size: One Size Fits Most
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
    • So functional best backpack around!
Color: Black (001)/Metallic Silver Size: One Size Fits Most
Why did you pick this product vs others?: Best drawstring back around! So many functions and is spacious with nice materials! It has a built in cooler pocket and a string holder to help with dangling strings and tripping! Also has nice high quality zipper pockets with one having cooling material for ice packs and food! ... show more
Reviewed in the United States on July 14, 2025 by Caroline H
    • Good deal!
Color: Black (001)/Metallic Silver Size: One Size Fits Most
Love it! Comfortable, seems durable, has some cool pockets, soft one i assume for the phone or glasses then there is a wet pocket i assume you can put a water bottle in. Zippers seem good, material is thick and holds up for my carry around gym bag lol ill see how it does in next few months. I got a good deal on it well worth what I paid. ... show more
Reviewed in the United States on July 5, 2025 by BLee
    • Overpriced
Color: Black (001)/Metallic Silver Size: One Size Fits Most
Nice product, good size and thickness just overpriced. Keep looking, you’ll probably find it cheaper.
Reviewed in the United States on July 16, 2025 by Hpyshpr
    • Great bag!
Color: Black (001)/Metallic Silver Size: One Size Fits Most
Why did you pick this product vs others?: Son liked this design, we liked the price Durability: Durable and lightweight
Reviewed in the United States on June 29, 2025 by Anthony Wald
    • Wanted to like it
Color: Black (001)/Metallic Silver Size: One Size Fits Most
I purchased this for my 12 year old son but unfortunately had to return it. If we put any weight in the bag it would sag down so much it was unusable. The straps were just way too long for his size. Maybe it would be fine for an adult. It does have a lot of pockets and that’s why we purchased it unfortunately we had to return it ... show more
Reviewed in the United States on September 19, 2024 by Chrisitna
    • Durable and Stylish Sackpack - Perfect for Everyday Essentials!
Color: Black (001)/Metallic Silver Size: One Size Fits Most
My boyfriend got this one and he likes it SO much! The Under Armour Undeniable Sackpack has quickly become his go-to for carrying everyday essentials! The black and metallic silver design is sleek and modern, making it versatile for both casual and gym use. Despite its lightweight feel, the material is incredibly durable and holds up well even with frequent use. The spacious main compartment fits his gear comfortably, while the smaller pockets are perfect for easy access to keys, phone, and wallet. The drawstring closure is secure and keeps everything in place, and the adjustable straps make it comfortable to wear. If you’re looking for a stylish and functional sackpack, this one is a fantastic choice! ... show more
Reviewed in the United States on November 10, 2024 by Alexandra “Lady”
    • Very secure!
Color: Black (001)/Metallic Silver Size: One Size Fits Most
Bought this for our visit to NYC to keep our belongings in while we traveled. I was able to keep my valuables in this bag under a light jacket securely as we trapped through the subway system and along the streets of the big apple. The low price design of the bag allowed it to discreetly be worn while keeping completely secure against my body with no worries of anyone trying to get inside. The inside pick is very large and was able to hold 3 jackets, 2 wallets, 3 water bottles, and dog treats lol the zipper pouch on the outside was perfect for easy access to our metro cards and pocket change. I also love the style and color! We now use this bag frequently for any type of trip we take! ... show more
Reviewed in the United States on February 10, 2025 by justthemom

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