Original shape, in the formula you can trust!
Mini Cubics were introduced in the early 80's. They are a less wide, and therefore lighter version of the original Cubic.  Mini Cubics originally were available in three colors and two hardnesses, Yellow 90a, Green 93a and purple 93a.  Now they come in 95a which is the perfect durometer for Skate Parks.  These Mini Cubics are 64 x 57 & 95A. Hard to find the black ones!