From Valiant UK distributor
there are two types of materials used:
"The material is composed of a base fabric of HIGH TENACITY TREVIRA, internally and externally coated with two coats of vinyl and with an outer coat of acrylic finish which reinforces the resistance to environmental agents, ageing and dirt, making cleaning easier", for sport series
"AKRON TPE of High Resistance to Abrasion has been developed to be used in professional", for professional series
I did not see any reference to "hypalon". Is one of the above, with other name?