I was looking for a mature model, I'd like to know which dancers to look for in this case?

How do you define mature? Over 25, 30, 40?

Using the Agent Ransack tool to search the iStripper xml files for age tags, importing the result into an OpenOffice spread sheet and sorting the data gives the following as the cards and ages for the most mature models

d0243 43
d0160 42
d0219 41
d0100 40
a0347 39
a0348 39
a0351 39
a0352 39
a0349 39
a0350 39
d0036 39
d0006 38
d0140 37
d0145 37
d0206 37
a1413 36
a1414 36
a1416 36
a1417 36
a1418 36
a1415 36
c0237 36
c0238 36
c0241 36
c0240 36
d0203 36
d0210 36
d0285 36

There is a total of 343 cards for which the age tag is 30 or more. The "d" cards are the VirtuaGirl Classic cards and the ages for them may reflect the model's age when the card was composed from a number of old cards rather than the age when at the time of the performance, but those for the other cards should be trustworthy.

How do you define mature? Over 25, 30, 40?

35+

I have searched my colletion and the only one who is above 35 ist Jelena Jensen...

Try Emily Spenser, Felina

@Khriux - If you ignore the very low resolution, 480 pixel, VirtuaGirl Classic cards for which the ages stated in the xml files seem to be those at the time at which the cards were edited rather than the age at the time of the performance there are only 5 girls for which the age given in the xml files is 35 or more

Felina, aged 39, 6 low resolution (720p) cards
Emily Spenser, aged 36, 6 1080p cards
Cameron Cruz, aged 36, 4 720p cards
Jenny McLain, aged 35, 1 high resolution (3k) card
Jelena Jenson , aged 35, 1 high resoution (3k) card

At age 34 there are Anita Queen with 2 720p cards and Julie Valmont with 4 1080p cards.

Hmmm.

What about Nikita Valentin (Cards a0431 to a0436)?

She was supposedly 35 when her cards were made. In fact one of them says 36. I'm not sure if that was an error or she had abirthday when she was filming :-)

It's a shame she is only available in 720p with no chance of it being upgraded. Personally I think she is stunning.

Anna Marie Goddard (one of my all-time favorite playmates) was 39 when she made her 480p classic cards Devin Devasquez, another other playmate, made her classic card at 42.

I do not know how I went wrong when looking for 35 year olds. My previous post was OK for 36+ but completely screwed up for 35 - Jenny McClain being only 21 and I missed three Jelena Jensen cards as well as the Nikita Valentine cards mentioned by Number 6.

The correct list for 35 years is

Nikita Valentin - 6 720p cards
Jelena Jensen - 4 3K cards

@Dorsai6 - Although it says Anna Marie Goddard was 39 in her VirtuaGirl classic card it has been my impression for other classic cards that the age quoted is the performer's age when Totem put the card together by mixing sequences from older VGHD cards and that at least some of the performers were several years younger when the original cards were made. I may be wrong about it, but its certainly been the impression I got when looking at classic cards a year or so back. For example Zuzana has 2 VirtuaGirl Classic cards and these give her age as 27 and 28, but she made some later VGHD cards when she was 24. I assume she made the original VG or VG2 cards when aged 24 or less, then made the VGHD cards when she was 24 and finaly three or four years later Totem edited the original VG or VG2 cards together to create the VirtuaGirl Classic cards that we can now download.

According to her Playboy BIO Anna Marie Goddard was born 13/01/1970.

If she had been 39 when she did her VG Classic card this would have been 2009. The classic cards are all pre 2007 so she couldn't have been 39 when the card was made, however I am guessing she was probably well into her 30's.

The classic card was issued in 2011 according to the filters in my collection, which would have put her age at 41. Therefore the truth must lie somewhere in between. It is possible that it was selected for upgrading in 2009 (when she was 39) but not completed/issued until 2011.

Anna Marie Goddard (one of my all-time favorite playmates)

Yes I must admit that she is also one of my favourite Playboy girls, although Mesina Miller holds top spot for me.

Not sure if 35+ is the abolute limit.

Ava Corcelles has no age shown on her cards however the NUDEeu

https://www.thenude.eu/Ava%20Courcelles_29218.htm#Bio

Shows her birthdate 27/02/81. Her cards were released in 2014 which would make her 33+ years old at the time.

Personally I don't care, she is absolutely gorgeous so age does not really come into it. Definitely one of the sexiest women on iStripper.

@Number6 - I agree with you about Ava Courcelles, Its odd that no age appears when looking at her cards because its in the xml files, all seven of them give her age as 33 as you had deduced.

Here are the cards which, according to their xml files, have performers aged 31 to 34. Again I have left out the VirtualGirl Classic cards for which the ages are suspect. I also have not yet downloaded the latest 62 cards (because of the network connection I am currently using) so there might be a few in those as well.

Age 34
d0040, d0050, d0076, d0058, d0192,
d0204, d0208, d0239, d0289

Age 33

a1401, a1402, a1403, a1404, a1405, a1406,
d0038, d0041, d0065, d0103, d0111, d0116,
d0117, d0119, d0123, d0128, d0151, d0157,
d0168, d0187, d0189, d0209, d0221, d0226,
d0238, d0241, d0264, d0274, d0286,
e0014, e0015, e0016,
e0611, e0612, e0613,
f0027, f0028,
f0030, f0031

Age 32

a0521, a0522, a0523, a0524, a0525, a0526,
a1319, a1318, a1320, a1321, a1322, a1322,
a1500, a1501, a1502, a1503, a1504,
d0010, d0035, d0042, d0054, d0089,
d0092, d0093, d0099, d0110, d0139,
d0166, d0170, d0175, d0180, d0186,
d0198, d0205, d0211, d0217, d0222,
d0231, d0228, d0248,
f0013, f0014,
f0016, f0017

Age 31

a0479, a0480, a0481,
a1115, a1116, a1117,
a1118, a1119, a1120,
d0008, d0027, d0039, d0046, d0049,
d0059, d0062, d0064, d0069, d0075,
d0080, d0086, d0088, d0091,
d0095, d0097, d0098, d0106,
d0124, d0127, d0132, d0135, d0137,
d0143, d0159, d0163, d0164, d0165,
d0169, d0181, d0190, d0195, d0196,
d0207, d0212, d0216, d0223, d0235,
d0255, d0299,
e0470, e0471, e0472, e0473,
e0554, e0555, e0556,
e0592, e0593, e0594, e0595,
f0171, f0172, f0173