Their brand labels say 240 grams. They weighed in around 250 grams, still plenty light. Maybe somebody can correct the ad claim of 205.
Mounted, the 23mm nominal width was 22mm on 19mm external width rims which made the aero shape particularly sleek.
Getting them on is as tight as I've seen. A rim strip that went wall to wall didn't allow the bead to sink as deeply inside as one that covers only the spoke heads, so that's a lesson for next time.
The tread center ridge is what makes these interesting. It's a vintage style that makes a resilient steel frame bike that much quicker. On my aluminum frame with carbon forks and seatstays, the handling is razor sharp at higher pressures. I tune the ride from comfort to race by varying the PSI.
The quality of the casings and accuracy of the tread pattern is first rate. A heavy-handed rider would be able to tear them up like any company's product. But as long as they stay an underrated brand, I'll keep riding way more tire than I paid for.
These tires feel pretty "firm" while riding; not bad, but I can feel a difference from others. They also look narrow for a 23mm tire.
I haven't put to many miles on them yet (currently mounted on one of back-up bikes). I didn't have any issues mounting them, yes a little tighter fit then some others - but I took my time and got them on without any problem.
Price range is a good value if you need to watch your budget.
Time will tell for durability.
Lastly would like to see these in 25/28mm size.