•• eihny are a CLOSED SPECIES and are NOT OPEN for free creation! ••
i think eihny would be very nimble and quite fast, especially since their average height would probably be around 5'3" or 5'5". The only thing that slows them down would be their heavy tails, caused by the thinning of the tail muscle as well as the heavy weight from the tail rings. The rings can't be removed from breaking, cutting, etc, or trying to slide it off. Their tail fur is much too full and bushy for the rings to be able to slide off, anyway.
Only some eihny feel the need to cut or shave the fur on the end of their tail if the weight bothers them too much, but most just cope, or even find it a challenge or an obstacle to try and overcome. Some just like the rings.
the same kind of rings are on their upper arms, though they don't restrict them as much. they change size to fit perfectly around the size of their arms if they lose or gain weight. they are still heavy, but with training or just growing up with them they don't seem to bother eihny too much. they become more decorative than anything.
just some ideas idk \o/