I carry a shirt and occasionally a pair of slacks, but if you carry more:

This Commuting Backpack Is Designed Not to Wrinkle Your Work Clothes - CityLab

Been rolling my own clothes for years, man.

I roll them up together, put them in a dry bag if rainy, or other nylon stuff sack and shove them in my pannier. I also do it for travelling, takes up less space since you have to take the time to roll them and it keeps them organized. Some weeks I even roll a weeks worth of stuff and have it ready to pack and roll out.

I have always wanted to design a ... nevermind do not want my idea to get stolen, though it is probably made already.

A roller here too ... works well as is in my current backpack

Funny that the company is Tasmanian, I learned to roll my clothes when I was taking an extended trip to Australia/NZ You can definitely get a lot more bang for your international baggage fee buck by rolling clothes. Makes sense it would work for commutes too. Very cool

I roll my clothes, but need to squeeze them in a much smaller bag so its really a fold and roll. Maybe my technique isn't good but there is still some wrinkling of shirts. Fine for normal days in the office, but not for the days I need to dress more formal to visit clients.

I actually would be interested in a bag like this for these days, as currently if I need to dress up or wear a suite I take the bus instead of bike.

That said I have a few hold backs on this one
1. Its awfully expensive for a bag I wouldn't use daily. Even may daily commute bag cost much less.
2. I Prefer 2 strap backpacks with even weight distribution, so I wonder how comfortable this would be (may be fine just don't know).
3. Why did they put the high vis color inside vs outside? Not a dealbreaker and my current bag is dark colored, but would bright outside be better for visibility while biking?

Really curious if anyone has seen or tried one.

I use an Eagle Creek packing folder.

Dress shirt, tie, socks, belt, etc. All fit in the folder. Just slip the folder into my bag and good to go.

Hmm, I have one of these but oddly never thought of using for commuting. Does it cause wrinkles on your shirt since you have to fold it?

That could be an every day option for me, but still not great for the rare days I need to wear a suite.

I keep my suits at work and just walk them over to the dry cleaner when they need cleaning.

What I carry daily is shirt, undies, socks, belt, etc and i use the folder.

Shirt stays wrinkle free and everything stays together.

Sometimes I throw a pair of slacks in too if I need something different at work, and those stay wrinkle free too.

I just fold my clothes neatly (had a part time job at a drycleaners when I was younger) before putting them in the pannier. No problems when they come out on the other end.

Turns out they have a backpack version of the wingman too, eliminating one of my personal concerns.

You can get it from bike tires direct in the US
Bicycling products by Henty - BikeTiresDirect

When I had to take my dress blues into work,I used one of these:
Nashbar Commuter Garment Pannier - Normal Shipping Ground

Requires a rack,but works quite well.

I work at a super casual, geeky place desperate to reduce turnover, so the mgmt types turn a blind eye to dress codes if you're decent.

Mgmt is just glad I take the time to change, unlike a number of people who come straight from the gym or go immediately afterwards.

I get bonus points for arranging to shower at the gym, even.

(I roll my clothes into panniers)

+1, been using mine for years for commuting, travelling, etc. Works great no matter the clothing.

Roll them. It's free! If your clothes are wrinkled then do it more carefully. I wouldn't spend money to solve a non-problem.

I use to roll method for my normal commute with OK results, but not 100% pleased with the results when I need to be a bit more formal, particularly for shirts and jackets.

It could be my method of rolling...does anyone have tips on the most effective methods of rolling and then packing in a backpack or pannier? Are there good videos, etc to explain this?

roll my clothes

i have an office

+2, I use the Eagle Creek in the summer for shirt, pants, socks, underclothes. The rest of the year I try to commute in business casual. I hope never to have to work somewhere where I need a suit jacket frequently. :-)

Looks nice, but they got the colors inverted - should be neon green on the outside.