SDYSM 45L 3-in-1 Gym Duffel Bag

The SDYSM 45L gym duffel bag is described as a convertible carry option for gym sessions and short trips. Its listing claims backpack, duffel and shoulder-bag carrying modes, plus separate shoe and wet-dry compartments for organising gear.

At a glance

Listing describes three carrying configurations: backpack, duffel and shoulder bag, with straps that can be concealed.
A ventilated shoe compartment and separate wet-dry compartment are claimed to keep those items apart from the main storage.
Top and front elastic bands are described as extra ways to secure a jacket or yoga mat.
Front quick-access pockets and multiple internal and external pockets provide several places to organise smaller items.

Price

$42.29Save 20%

Reference price: ~~$53.11~~

Price checked: 14 Nov 2026

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Pros and cons

Pros

The stated 45-litre capacity and separate shoe compartment suit buyers carrying gym gear alongside overnight or travel items.
Convertible carry modes offer flexibility between hands-free backpack use and conventional duffel or shoulder carry.
The listing describes a ventilated shoe compartment and a separate wet-dry compartment for separating used gear.

Cons

At 1.51 kilograms before packing, the listed bag weight adds to the load for buyers prioritising a very light carry.

Technical specifications

11 specifications

Identity and capacity
Model	Lyl-us-sy20069-black
Capacity	45 Liters
Size	45L
Colour	Black

Dimensions and installation
Dimensions	54L x 30W x 29H centimetres
Weight listed	1.51 Kilograms

Materials and protection
Material	Polyester
Water resistance listed	Waterproof

Carry and organisation
Closure	Zipper
Strap type	Adjustable
Handle type	Web Handle

What to know before buying

Waterproofing, tear resistance, ventilation and reinforced stitching are listing claims. The supplied information does not specify a water-resistance test or rating. The 45-litre size and stated dimensions may help assess fit for your intended travel use.

Who is it for?

A good fit for

Gym users who want separate shoe and wet-clothing storage.
Travellers looking for a large duffel that can also be carried as a backpack or shoulder bag.
People who value multiple pockets and external elastic storage for gym or overnight gear.

Less suited to

Buyers seeking a lightweight bag, since the listed empty weight is 1.51 kilograms.
Anyone needing a confirmed luggage-size or airline carry-on fit. The listing calls it carry-on luggage but provides no airline-specific sizing confirmation.

SDYSM 45L 3-in-1 Gym Duffel Bag · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.6 / 5 · 67 ratings

5 stars76%76%
4 stars15%15%
3 stars6%6%
2 stars0%0%
1 star3%3%

Customer feedback highlights perceived good quality, roomy capacity and useful storage, including the shoe compartment. Some customers reportedly describe it as suitable for week-long trips, but that is an individual-use impression rather than a guaranteed fit for every packing list. The generally favourable rating distribution is encouraging, while a small share of ratings are low, and aggregate ratings do not explain the reasons. The listed 45-litre capacity and separate compartments are relevant to these reported strengths, though the bag's actual fit depends on what you pack.

Positive themes

Customers are reported to appreciate the roomy design and storage capacity.
Feedback describes the quality positively and mentions the shoe compartment and multiple pockets.

Frequently asked questions

How can this bag be carried?

The listing describes backpack, duffel and shoulder-bag configurations. It says the backpack straps can be concealed when not in use.

Does it have separate storage for shoes and wet gear?

Yes. The listing claims a ventilated shoe compartment and a separate wet-dry compartment.

What capacity and dimensions are listed?

The listing gives a capacity of 45 litres and dimensions of 54L x 30W x 29H centimetres.

Is it confirmed to fit as airline carry-on luggage?

The title calls it a carry-on bag, but no airline-specific size limit or fit confirmation is supplied. Check the dimensions against your airline's requirements.