Flexible PLA / Soft PLA

Hello,
I have done a few searches on this forum but not found any reference to "flexible PLA" or "soft PLA" which I believe are descriptions of the same thing - a flavour of PLA which has a rubbery texture and which lends itself to printing things such as tyres, belts, robotic tank type tracks.
Can anybody offer any advice on printing with this filament - as sold by GRRF (soft PLA) and Ultimaker (flexible PLA) and does anybody have any experiences of using it which they can document here?
Thank you,
Alan

... try with "soft pla" and [All Dates]: [forums.reprap.org]

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Viktor
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Aufruf zum Projekt "Müll-freie Meere" - [reprap.org] -- Deutsche Facebook-Gruppe - [www.facebook.com]

Call for the project "garbage-free seas" - [reprap.org]

You have to print it SLOW. I use 15mm/s.

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Bob Morrison
Wörth am Rhein, Germany
"Luke, use the source!"
BLOG - PHOTOS - Thingiverse

There is another type of flexible elastic type filament from these guys http://3dprinterfilaments.com/rubber_%20like_filaments