I used a 4mm hook and chunky sidar yarn, but you can use whatever you like!
BALL
START WITH RED
5 INTO MC
INC 5 (10)
SC 1 INC 1 (15)
SC 2 INC 1 (20)
SC 3 INC 1 (25)
SC 4 INC 1 (30)
SC 5 INC 1 (35)
SC AROUND 1 (35)
CHANGE TO BLACK, SC AROUND 2 (35)
CHANGE TO WHITE. SC AROUND 1 (35)
5 SC DEC 1 (30)
4 SC DEC 1 (25)
3 SC DEC 1 (20)
2 SC DEC 1 (15) Start Stuffing Here
1 SC DEC 1 (10)
DEC 5
FINISH OFF
BUTTON
START WITH WHITE
4 INTO MC (4)
CHANGE TO BLACK, SC 1 INC 1 (8)
FINISH OFF AND ATTACH TO POKEBALL
BALL
START WITH RED
5 INTO MC
INC 5 (10)
SC 1 INC 1 (15)
SC 2 INC 1 (20)
SC 3 INC 1 (25)
SC 4 INC 1 (30)
SC 5 INC 1 (35)
SC AROUND 1 (35)
CHANGE TO BLACK, SC AROUND 2 (35)
CHANGE TO WHITE. SC AROUND 1 (35)
5 SC DEC 1 (30)
4 SC DEC 1 (25)
3 SC DEC 1 (20)
2 SC DEC 1 (15) Start Stuffing Here
1 SC DEC 1 (10)
DEC 5
FINISH OFF
BUTTON
START WITH WHITE
4 INTO MC (4)
CHANGE TO BLACK, SC 1 INC 1 (8)
FINISH OFF AND ATTACH TO POKEBALL