On the Viovet site the green ones look different, but may well be the same? Am unsure!
Here is the link to the Antos toothbrush :
https://www.viovet.co.uk/Antos_Cerea...=antos&sct_r=2
And here is the link to the Whimzee toothbrush :
https://www.viovet.co.uk/Whimzees_To...g_Chew/c19295/
In the pictures the green ones look different ...