The 9 inch QUBE Basketball Trainer uses the same EPE foam as the other QUBEs.  The 9" QUBE has a circumference of 33" (so it's slightly larger than the Elite and 8" QUBEs).  The 9" QUBE will pass through all rims and most standard sized nets (it may not always pass through small nets).

9" Qube Basketball Trainer for ages 13 yrs +