The width of a standard Mac-Ride seat's stirrups is 73mm

ball end on the long side

Eco-friendly

You will have to use the old thumb test

100 Percent Surpass Youth Elbow Guard - Youth L-XL - Black Out of Stock The width of a standardDescription The 100% Surpass offers the high levels of protection demanded by Downhill and Enduro riders. With a protective plastic cup, strategically placed foam padding and a rubberised outer skin, your elbows will be well protected from the rocks, roots and compacted dirt waiting for you on the trails. Who's this item for: They are designed primarily for Downhill and Enduro riders, but are well ventilated and could be used for Trail riding as well.