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Amazon.com | adidas Men's Pureboost 21 Running Shoe, Core Black/Core Black/Grey Six, 4 | Road Running
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adidas alerts on X: "NOTE: Adidas size chart suggests going up 1.0 sizes from your Men's Ultra Boost size. https://t.co/Mitpa5EBeE https://t.co/u9qO63mU5h" / X
![Amazon.com | adidas Men's Pureboost 21 Running Shoe, Core Black/Core Black/Grey Six, 4 | Road Running Amazon.com | adidas Men's Pureboost 21 Running Shoe, Core Black/Core Black/Grey Six, 4 | Road Running](https://m.media-amazon.com/images/W/MEDIAX_792452-T2/images/I/71o0NJ+l5VL._AC_UY300_.jpg)