I got 4 today. Damn fast post. All tested 3.6 V. Currently on charge. They are as long as 186700. Plain blue wrapper. I can't test capacity. I don't feel like peeling off the wrapper either.
Just received 4 batteries, I am charging them so I can't tell the results yet.
My first impression is they are really good wrapped, they have got a thick plastic that should last a lot more than many others like Trustfire flames or even Hi-MAX.
I've received mine this morning. They look well put together and almost identical in size to my Redilast 2900mah. They have the same type positive button too. They were resting at 3.65v and are now on charge. Will to a rundown test later compared to Redilast 2900mah.
Cycle them 3 or 4 times. The capacity will increase, only very slightly, but will increase. Since your Redilast 2900 are already cycled you should do the same with the new ones you've got.