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Under Armour Undeniable 5.0 Duffle Bag, Medium (Black/Metallic Silver)
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Under Armour Undeniable 5.0 Dufflesweaty kit kept away from the clean stuff

Under Armour Undeniable 5.0 Duffle Bag, Medium (Black/Metallic Silver)

Reviewed by the WhyToBuyThis team · Updated September 2026 · How we choose

Perfect for

  • Training before or after work
  • Carrying shoes and a change
  • Water-repellent
  • Everyday gym bag
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Price: $37.50

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  • Great gift ideaChosen for real-world gifting
  • Hand-pickedCurated, not scraped
  • Honest reviewThe catch, not just the hype

Why this gift works

The Under Armour Undeniable 5.0 Duffle in the medium size holds 58 liters and measures 24.6 by 12.1 by 11.4 inches. It is 100% polyester with a UA Storm water-repellent finish and a TPU-coated, foam-lined bottom and side panels. A large vented pocket keeps shoes or sweaty clothes apart, there are two water bottle slip pockets and a front zip organizer pocket, and the padded shoulder strap is removable. It weighs 22.5 ounces. This listing is black with metallic silver.

A gym bag gets used every session, and a separate vented pocket keeps wet shoes off a clean shirt. The medium size fits a change of clothes, shoes, a towel and accessories for someone who trains before or after work.

Who is this gift for?

Great for

  • Someone who trains before or after work
  • A lifter who carries shoes and a change
  • A teen athlete

Think twice if

  • They want a backpack
  • They carry very little

The catch

Under Armour's care instructions are hand wash and air dry, not machine wash. At 24.6 inches long it is a lot of bag for someone who carries only a towel and a bottle, and as a duffle it rides on one shoulder.

Skip if they walk or bike to the gym and would rather carry a backpack, or travel light.

Key specs

Under Armour Undeniable 5.0 Duffle Bag, Medium (Black/Metallic Silver) specifications
BrandUnder Armour
ModelUndeniable 5.0 Duffle, medium, black/metallic silver
Capacity58 L
Size24.6 x 12.1 x 11.4 in
Weight22.5 oz
MaterialPolyester with UA Storm water-repellent finish
PocketsVented shoe or laundry pocket, 2 bottle pockets, front organizer
StrapRemovable padded shoulder strap

Worth knowing before you buy

  • Small and extra-small sizes are separate listings.
  • It weighs 22.5 ounces.

Why we like it

  • Vented pocket for shoes
  • Water-repellent finish
  • Coated bottom panel
  • Removable padded strap

What to look for in a gym bag

  • Separate pocket. A vented compartment keeps shoes and sweaty clothes apart.
  • Size. Medium bags fit clothes, shoes and a towel; small bags suit a quick session.
  • Material. Water-repellent fabric and a coated bottom handle wet floors.

Questions people ask

58 liters; 24.6 x 12.1 x 11.4 inches.

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