Where to get such variant options

New Member
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Hey, my store has many products and i have many variants in a product like a design comes in ladies tank and mens tshirt etc and the sizes for mens is S to 5XL but in ladies it is XS to 3XL but my page shows all the size variants no matter what the variant selected in the first is.

You can check my product page here and you'll know what the problem is 


I need something like this link i am attaching below

So can anyone tell me which theme or app this is or how can i get the functionality like this?