# Under Armour Undeniable 5.0 Small Duffle Bag, 23 L

The Under Armour Undeniable 5.0 Small Duffle Bag is a compact sports holdall listed with 23 litres of capacity and five compartments. Its vented laundry or shoe pocket and water-repellent finish suit gym use, while its compact size may limit it for longer trips or bulky kit.

- [Original product page](https://bargainpostbox.co.uk/product/under-armour-undeniable-5-small-duffle-bag)
- [View offer](https://bargainpostbox.co.uk/visit/under-armour-undeniable-5-small-duffle-bag)
- Market: UK
- Language: en-GB
- Currency: GBP
- Brand: Under Armour
- Model: Undeniable 5.0 Duffle Bag
- Category: Fashion & Accessories > Bags & Luggage > Handbags
- Price: 19.89 GBP
- Previous price: 32.00 GBP
- Discount: 38%
- Price checked: 2026-11-13T06:03:28.978Z
- Rating: 4.5 / 5
- Reviews: 2011

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- UA Storm technology is described as providing a highly water-repellent finish, not a waterproof construction.
- A vented pocket is intended for laundry or shoes, with internal slip pockets and a front zipped organisation pocket.
- The listing also describes dual bottle slip pockets and MOLLE webbing attachment points.
- TPU-coated, foam-lined bottom and side panels are claimed to add structure and durability.

## Pros

- The separate vented pocket and internal organisation features help separate footwear or laundry from other kit.
- At 23 litres, the listed capacity offers a compact option for gym essentials and shorter outings.
- The adjustable shoulder strap provides an alternative to carrying it by the web handle.

## Cons

- The small listed capacity is less suited to buyers needing room for bulky equipment or extended travel packing.

## Specifications

### Identity
- Brand: Under Armour
- Model: Undeniable 5.0 Duffle Bag
- Size: X-Small
- Style: Athletic
- Colour: Black / Black / Metallic Silver
### Capacity and dimensions
- Capacity: 23 litres
- Dimensions: 45L x 22W x 22.5H centimetres
- Weight listed: 0.4 Kilograms
### Materials and protection
- Material: Polyester
- Water resistance listed: Water Repellent
### Organisation and carry
- Compartments: 5
- Closure: Zipper
- Strap: Adjustable
- Handle: Web Handle
- Recommended uses: Gym/sports, outdoor activities, travel

## Before you buy

- The listed size, capacity and dimensions point to a compact bag, but the product description also identifies a Pitch Grey Medium Heather with Black colourway while the details specify Black / Black / Metallic Silver. Confirm the selected colour and size on the listing before purchase. Customer feedback also differs on strap convenience and durability, so treat those experiences as variable.

## In the box

- Under Armour 5.0 Undeniable XS Duffle Bag (Included)

## A good fit for

- Gym users who want a compact bag with a separate vented pocket for shoes or laundry.
- Buyers looking for a small sports or travel holdall with several organisation pockets.

## Less suited to

- Anyone needing a large-capacity holdall for long trips or substantial sports equipment.
- Buyers who require waterproof protection rather than a water-repellent finish.

## Customer feedback

Customer feedback highlights versatility for gym use and appreciation for storage, including a small net pocket and a separate trainer compartment. Some customers describe the bag as durable while others find it flimsy, and opinions on strap convenience are mixed, including reports of a non-removable strap or a missing shoulder strap or pad. For buyers considering this compact, 23-litre bag, the reported storage benefits may suit routine gym kit, while durability and strap expectations remain variable.
- Positive themes: Customers appreciate the bag's versatility for gym use and its storage features.
- Positive themes: The customer summary reports that some buyers consider it good value for money.
- Mixed feedback: Durability opinions vary, with feedback describing both durable and flimsy experiences.
- Mixed feedback: Strap feedback is mixed, including reports that it is not removable and that a strap or pad was missing.

## Frequently asked questions

### Is this bag waterproof?
The listing describes a water-repellent finish. It does not establish that the bag is waterproof.
### Does it have a separate shoe compartment?
The manufacturer describes a large vented pocket for laundry or shoes. It does not specify that the pocket is exclusively for shoes.
### How much can it hold?
The listed capacity is 23 litres, with dimensions of 45L x 22W x 22.5H centimetres.
### Is the shoulder strap removable?
The listing says the strap is adjustable but does not confirm that it is removable. Customer feedback is mixed about the strap design, so check the listing details if removability or a shoulder pad matters.

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## Add-ons

- [BEAR GRIP Multi Grip Straps/Hooks - Rubber Lifting Straps/Gloves \| Gym straps with strong grip and wrist support for deadlift](https://bargainpostbox.co.uk/visit/under-armour-undeniable-5-small-duffle-bag)
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## Images

![Under Armour Undeniable 5.0 Small Duffle Bag, 23 L — 1](https://bargainpostbox.co.uk/i/VJoT83EA9FFVIVDGlsPElg_ERADwYrEhJJrehsBehNbhzKq1FwlValYAbpNLv-6ZdkJyeDlZzhvyGtP5CNCbTge4tN5V7lWYOBBNU7G4P07flXEzfWtxHBWG.jpg)

![Under Armour Undeniable 5.0 Small Duffle Bag, 23 L — 2](https://bargainpostbox.co.uk/i/Yh4BGXhQFAuGEiSG7TFNmM8Np077seiaFlF1lpm8-uUyVgxBfR-ex9VFEx4XaEqN2lyPYIu71uQlGfahvEOt1BfasQws_UrDkhi46PfyHyRulMeURYDxwAL2.jpg)

![Under Armour Undeniable 5.0 Small Duffle Bag, 23 L — 3](https://bargainpostbox.co.uk/i/B7_WvUfOZy5yePMfEIEou6R2l4Vnf36t-ThUlT2crhIGc53VxLDpK2RJysbOwYd5cjhjknoIjhf590IuFdQR2YdkKoeYv-tYRULVRyWhQT9palaHaReafB69.jpg)

![Under Armour Undeniable 5.0 Small Duffle Bag, 23 L — 4](https://bargainpostbox.co.uk/i/Qbgf3vIGxqWuSWteiB-ZXZikoAK2XS9IYpCpw3yvpxHm_4Q_6KxyA_n-3x5kOUoCAeGDegC9RQSV0Cwyhwj3Xv5lsB347oA1yCqqfv-Q6c9z614DAZDsqRmg.jpg)

![Under Armour Undeniable 5.0 Small Duffle Bag, 23 L — 5](https://bargainpostbox.co.uk/i/AqrrjbmjJSg9V7mFMZRrJvBa5loeT0YYG4h55aK3BqbrzxLyQKhFGIh5X-BoUyAuzCvx2PEXubRc8i336Ek1i_xaeI-V7oiuHuMA8ywS2r8FILXi-qvtUKOf.jpg)

![Under Armour Undeniable 5.0 Small Duffle Bag, 23 L — 6](https://bargainpostbox.co.uk/i/uhSXkr2EvUOTAM38j9AISFyUtoaTpNrHrdq-wZ9PYDaTwm9nJKWLWEcB1O7QNZh3S7uXQ1e1UL3d68ZXT2ARcFDUiPAg7KxqTgzw9MaXMeopbXJkSdG_g434.jpg)

![Under Armour Undeniable 5.0 Small Duffle Bag, 23 L — 7](https://bargainpostbox.co.uk/i/14s9pTFqmt_ZpyE0_fqYmKAjcxhhqlhApgaRUjCcppVpoq_qqZZ4FjjcZEu84Bslpw2pnUkS3RIa5G5sjlt63LyHRadJu9MG3m8l92Fss5UW8qPZDbBMJtHC.jpg)