I am a swim instructor and life guard.  I use this duffel to lug around toys, equipment and my clothes.  
It has 2 side pockets that are water proofed.  I use the large one to hold all my wet toys and the smaller of the 2 to hold my wet swim suits. they both have a mesh-vent front so wet stuff doesn''t mold and can dry.
The large inner pocket holds everything I need to keep dry, folders, towels clothes.
The slim front pocket holds my certifications, ID, phone, etc.  
The fabric is light weight and durable.  the zippers and D rings and other hardware all work fine.

This bag is sturdy, roomy, and quite functional. One compartment holds all my toiletries; one can hold wet things; When I''m done at the pool I can fit my smaller "wet" bag inside. This bag is working great for me.

I bought this bag in silver, size medium. It''s a good looking bag, more than ample for my swim stuff. In fact, a small would have been big enough for all of my daily swim items.

I use this as an all-purpose gym bag. It has plenty of room for shoes, clothes, towels and accessories. The fabric is strong and it''s well-made. Some have commented that the front pocket is too small. It is just fine for keys, ID, wallet, watch, cell phone, etc.

I wanted a duffel bag that could hold my exercise clothes & shoes, pool items  and shower items and have it fit in my locker. I love the mesh side pockets - especially the large one that has an extension sleeve that expands in to the main bag area - this is great to store flip flops and my still damp swim suit. the other mesh pocket is perfect for goggles & paddles.  This bag is bigger than I thought - it doesn''t fit on shelf in locker, have to stand up in main area. Maybe the small size does? But it does fit everything I need & more! I also love the front pocket for key storage, etc. It does claim to have a cell phone pocket - but it is too small for smart phones. No need to worry though, still room in bag for all items.

Roomier than I expected. Has pockets right where you need them. Like the handle/strap carrying options. Like that it is reflective at night. Like the separate large end pocket for wet stuff  Colors are clear and not too bright (I ordered blue and green). Can put my yoga mat in it. Bought one for the pool, one for the gym. And all arrived in two days!!! Excellent service. Will definitely recommend to others and order more in the future.