bigger than thought although it does give dimentions they look cute on the picture, but they're full size. the ball is much bigger than a tennis ball (med orange), 8cm across to my reconing. they have great sound though, loud and quite crisp. you can get a good snap with them although it took a little pratice cos of their size (I'm use to much smaller). there is some looseness to the beads too when played, you get a snap with some loose bead sound too, that may come better the more i play them, i quite like it though, they accompany them selves quite nice, they're light too. they are well made and sturdy. I'v played percussion for many years and play in a Latin/salsa band at the mo, i will try them out with the band later today.