New Official 12-PANEL design. Rubber cover. This uses a special rubber compound to give a tacky feel and durability. Deep-pebble surface. Nylon wound. Butyl bladder. Official size and weight.A lot of schools and now adopting these coloured basketballs whereby they select the size 7 in one colour, size 6 in another colour and size 5 in another, which makes it easy for teaching various age groups so they are told what colour to use and not what size.Molten recently introduced the new patented 12-panel basketball, a cutting-edge design, providing additional seams when compared to the traditional 8-panel balls manufactured by other ball makers. More seams, mean better fingertip control for dribbling, passing and shooting. The Molten 12-panel basketball is now used in every top international competition world-wide.