I'm trying to find thigh blocks that are somewhere between the smaller 'dressage' Wintec blocks (which are next to nothing) and the big 'potato' blocks that come with the Isabelle.... they're too big.
InnisFailte Pinto Sporthorses & Coloured Cobs
Bits are like cats, what's one more? (Petstorejunkie)
pessoa makes removable thigh blocks too. That's also something that will a little creativity and a trip to the craft store you could make your own custom thigh blocks
chaque pas est fait ensemble
the Ovation 4 star saddle I have have velcrow blocks!!!
Schleese saddles come with velcro blocks.
Thorowgood make velcro blocks in several sizes.