BBy Bikram Nath·Researched from UK Amazon listings·Updated 2026-10-16·6 products compared
Disclosure: As an Amazon Associate I earn from qualifying purchases. This guide contains Amazon affiliate links, and we may earn a commission — at no extra cost to you — but it never changes our rankings.
What are the best gym bags to buy in the UK?
Our top pick for Gym Bags in the UK is the Under Armour Undeniable 5.0 Small Duffle Bag.
The Under Armour Undeniable 5.0 Small Duffle Bag suits gym-goers who want approximately 40 L of space, a water-repellent UA Storm exterior and a vented pocket to keep shoes or laundry apart.
The Under Armour Undeniable 5.0 Small Duffle Bag is our top pick gym bag because its listing states approximately 40 L capacity, a UA Storm water-repellent exterior, TPU-coated foam-lined panels on the base and sides and a large vented pocket for shoes or laundry. For a stated size and strap range, the HOTOR 35L lists 52 x 28 x 27cm, a waterproof inner pocket and a shoulder strap adjustable from 63 to 120cm; to carry it as a backpack, the Helly Hansen HH Duffel Bag 2 30L has removable padded shoulder straps.
This guide compares six gym bags from Under Armour, HOTOR, SKYSPER, Gonex, Helly Hansen and RFG, using what each listing states: capacity, dimensions, material, shoe and wet storage, and carry options. Stated capacities run from 30L on the SKYSPER, Gonex, Helly Hansen and RFG to approximately 40 L on the Under Armour.
Buying guide
What should you look for in Gym Bags?
1Capacity: the Under Armour states approximately 40 L, the HOTOR 35L, and the SKYSPER, Gonex, Helly Hansen and RFG 30L. The Gonex listing also offers 60L and 100L sizes.
2Shoe storage: the Under Armour has a large vented pocket for shoes or laundry, the HOTOR a deep side pocket that keeps shoes separate, the Gonex a built-in shoe compartment and the RFG a ventilated shoe compartment. The SKYSPER and Helly Hansen listings do not mention a shoe compartment in the features we read.
3Wet storage: the SKYSPER lists a wet pocket, the HOTOR a waterproof inner pocket and the Gonex a waterproof zipper pocket for wet towels or damp clothes. The Under Armour, Helly Hansen and RFG listings do not mention a wet pocket in the features we read.
4Material: the SKYSPER states 600D polyester, the Gonex water-repellent and tear-resistant polyester fabric, the RFG PU-coated fabric that is tear and abrasion resistant, and the Under Armour a UA Storm water-repellent exterior. The Helly Hansen describes its main fabric as water resistant and the HOTOR describes a water-repellent material.
5Carry options: the HOTOR, SKYSPER and RFG list a luggage or trolley sleeve and the Gonex says it slides over a luggage handle; the Helly Hansen switches to a backpack with removable padded shoulder straps. The HOTOR gives a strap length, 63 to 120cm; the other five listings do not state one.
Our process
How do we choose our picks?
We don’t lab-test products ourselves. Instead we synthesise current Amazon UK listings and published specs into clear, honest recommendations. We earn a commission if you buy through our links, but that never changes which products we rank.
Current UK availability
We check each pick against live Amazon UK catalogue data rather than last year’s model lists. Stock moves fast, so a listing can sell out after we publish.
Published specs
We compare manufacturer specifications so each pick is right for a real budget and use-case.
UK-specific fit
We factor in UK voltage and plug/fitting standards — details that generic global lists miss.
Smaller internal pockets, dual water bottle slip pockets, front zip pocket with webbing
—
3 internal mesh pockets; side pockets with key hook
—
Internal storage and an external zip pocket
Mesh side pocket and internal zipper pocket
Dimensions
—
52 x 28 x 27cm
47 cm x 25 cm x 25 cm
47*22*25cm
—
—
Wet Storage
—
Waterproof inner pocket for wet towels, toiletries and swim goggles
Wet pocket for sweatshirts and wet or dirty clothes
Waterproof zipper pocket for wet towels or damp clothes
—
—
The rankings
The best Gym Bags, ranked
1
Under Armour
Top Pick
Under Armour Undeniable 5.0 Small Duffle Bag
The Under Armour Undeniable 5.0 Small Duffle Bag suits gym-goers who want approximately 40 L of space, a water-repellent UA Storm exterior and a vented pocket to keep shoes or laundry apart.
Capacity
Approx. 40 L
Material
UA Storm water-repellent exterior; TPU-coated, foam-lined panels on the base and sides
Shoe Storage
Large vented pocket for shoes or laundry
Carry Options
Adjustable shoulder strap
Pockets
Smaller internal pockets, dual water bottle slip pockets, front zip pocket with webbing
What we like
+Large vented pocket for shoes or laundry, per the listing
+UA Storm water-repellent exterior with TPU-coated, foam-lined base and side panels
+Dual water bottle slip pockets and a front zip pocket
+Approx. 40 L capacity stated in the listing
Worth noting
–The listing states no warranty term
–The listing gives capacity only as approximately 40 L
–The listing does not mention a luggage sleeve or a wet pocket in the features we read
£23.99£36.00−33%Amazon.co.uk price as of 17 Oct, 13:00 (London time). Details
The HOTOR 35L Gym Bag suits buyers who want stated dimensions of 52 x 28 x 27cm, a separate shoe pocket, a waterproof inner pocket and a strap that adjusts from 63 to 120cm.
Capacity
35L
Dimensions
52 x 28 x 27cm
Material
Water-repellent material (per listing)
Shoe Storage
Deep side pocket keeps shoes separate
Wet Storage
Waterproof inner pocket for wet towels, toiletries and swim goggles
Carry Options
Top handles; detachable shoulder strap adjustable from 63 to 120cm; luggage sleeve
What we like
+States its size: 35L and 52 x 28 x 27cm
+Shoulder strap adjustable from 63 to 120cm, per the listing
+Deep side shoe pocket and a waterproof inner pocket for wet gear
+Built-in luggage sleeve for rolling suitcases
Worth noting
–The listing states no warranty term
–The listing names no specific fabric, describing only a water-repellent material
£14.98£24.99−40%Amazon.co.uk price as of 17 Oct, 13:00 (London time). Details
The Gonex 30L Gym Duffel Bag suits buyers who want a shoe compartment and a waterproof wet pocket in a stated 47*22*25cm bag, with larger 60L and 100L sizes listed.
Capacity
30L
Dimensions
47*22*25cm
Material
Water-repellent, tear-resistant polyester fabric
Shoe Storage
Built-in shoe compartment
Wet Storage
Waterproof zipper pocket for wet towels or damp clothes
Carry Options
Handles; adjustable, detachable shoulder strap; slides over a luggage handle
Size Options
Listing also offers 60L (66*28*31cm) and 100L (80*33*34cm)
What we like
+States dimensions for each size: 30L (47*22*25cm), 60L (66*28*31cm) and 100L (80*33*34cm)
+Built-in shoe compartment and a waterproof zipper pocket
+Carries three ways: by hand, over the shoulder or over a luggage handle
+Water-repellent, tear-resistant polyester fabric, per the listing
Worth noting
–The listing states no warranty term
–The listing states no weight for the bag in the features we read
The Helly Hansen HH Duffel Bag 2 30L suits people who want to carry a 30L gym bag as a backpack, with water resistant main fabric and YKK zippers, per the listing.
Capacity
30L
Material
Water resistant main fabric
Carry Options
Removable padded shoulder straps switch it between duffel bag and backpack; top carry straps
Pockets
Internal storage and an external zip pocket
Zips
YKK zippers
What we like
+Switches between duffel bag and backpack with removable padded shoulder straps
+Packs into a separate bag for storage when not in use, per the listing
+YKK zippers and top carry straps
+The listing says it is carry on compatible on most airlines
Worth noting
–The listing does not mention a shoe compartment or wet pocket in the features we read
–The listing states no warranty term
£53.99£56.99−5%Amazon.co.uk price as of 17 Oct, 13:00 (London time). Details
Product prices and availability are accurate as of 17 Oct, 13:00 (London time) and are subject to change. Any price and availability information displayed on Amazon.co.uk at the time of purchase will apply to the purchase of this product.
Editor's Note
None of the six listings states a warranty term. Every listing states a capacity, though the Under Armour gives it as approximately 40 L.
Our Take
The Under Armour Undeniable 5.0 Small Duffle Bag is the default pick for its approximately 40 L capacity, UA Storm water-repellent exterior and vented pocket for shoes or laundry. Choose the HOTOR 35L for a stated strap range and a waterproof inner pocket, or the Helly Hansen HH Duffel Bag 2 30L to carry it as a backpack.
Questions & answers
Frequently asked questions
Which gym bags have a shoe compartment?
The Gonex 30L Gym Duffel Bag and the RFG Gym Bag 30L list a shoe compartment, ventilated on the RFG. The HOTOR 35L has a deep side pocket that keeps shoes separate, and the Under Armour Undeniable 5.0 has a large vented pocket for shoes or laundry.
Which gym bags have a wet pocket?
The SKYSPER 30L Gym Duffel lists a wet pocket for sweatshirts and other wet or dirty clothes. The HOTOR 35L lists a waterproof inner pocket and the Gonex 30L a waterproof zipper pocket for wet towels or damp clothes.
Can a gym bag be carried as a backpack?
The Helly Hansen HH Duffel Bag 2 30L can: its listing says the removable padded shoulder straps switch it between a duffel bag and a backpack. The listing also says it packs into a separate bag when not in use.
How big is a 30L gym bag?
The Gonex 30L Gym Duffel Bag lists 47*22*25cm for its 30L size, and the SKYSPER 30L gives 47 cm x 25 cm x 25 cm in its product details. For comparison, the HOTOR at 35L lists 52 x 28 x 27cm.
Which gym bags fit over a suitcase handle?
The HOTOR 35L, SKYSPER 30L and RFG Gym Bag 30L list a luggage or trolley sleeve, and the Gonex 30L says it slides over a luggage handle.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. UKPicks earns a small commission from qualifying purchases made via links on this page. This does not affect our editorial recommendations or the price you pay.
