Probably the best MMA-sparring gloves are now available as Vegan.
Fairtex does not usually make these as Vegan but I am arranging an larger order of these gloves and they can make these exact gloves from synthetic leather as "special order"
Size Medium 47 euros
Size Large 49 euros
Size Xtra Large 51 euros
I can not give any exact measures about sizes, sorry.
You just have to figure it out yourself...
Or if you have a retailer somewhere near that carries Fairtex, you can go and test the FGV15.