Go to walmart.com or use the app. Search either your local store or walmart.com usually online has them but in the case they dont you can always call your local store and ask them to do inventory check and if none are on the way ask if they can special order for you. I know store #125 (zero st) has done that for grocery items for a customer before.
This walmart does carry Terra and Sky jeans so you should be able to find what your looking for there.
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