|Groove Pant II - $98|
Also, for those that don't know, Lululemon has a kids line called Ivivva. Their prices are alot cheaper and if you can fit some of their kids sizes then even better!
I just purchased this mat from Ivivva online, and am waiting for it to arrive! It was only $28 and you can find it here
Lululemon mats normally start at $48. I'm not sure if there's a difference between the quality or size but it is less pricey. You might want to check it out!