I have a 16 month year old boy and he loves this. The ball is not smooth, it has rubber pointy bits all round which help the baby hold the ball. Its not very big aswell, about 16.5cm diameter
The picture shows blue colour, mine came in yellow. Yours may come in another colour. Do tae note of this when ordering.
If you have more older kids then i think you should not allow them to play with the ball unless they are sensible. If older kids start kicking this about it could hurt the baby due to pointy bits, then again it would also hurt a baby without pointy bits if a older kid kicked it.
If babies play on their own its a great ball. They can learn to feel different texture and have fun as the ball is bouncy