Here are links to some people whose work and or products I highly recommend.

Fran Demin makes the best jeans known to man.   Fantastic quality and comfort with zero restriction of movement. 
Use the discount code "yurimar" upon check out to receive 10% off your purchase.  
http://fran-denim.myshopify.com/

The single loop rubber bands are an incredibly and versatile training tool that I use frequently.  
RubberBanditz makes some excellent quality bands.  
Use the discount code 'yurimar' upon checkout to receive 10% off your purchase.  
https://www.rubberbanditz.com/


Descended from Odin is a clothing brand based out of the UK.  Apart from having a badass Norse theme and logo, the clothes themselves are very high quality and are made with excellent materials.  
Get 10% off your purchase with the code "YURI"
https://www.descendedfromodin.co.uk/

 

Kit Laughlin is a good friend and an amazing resource on the development of flexibility.  Kit has several books out and teaches around the world.  Check out his work at http://www.kitlaughlin.com

 

I have worked with The Living Art of Armando as a aerialist and a model.  Armando is a brilliant artist who creates some amazing things.  Check out his work here: http://tlaoa.com/LivingArt/