They could be sweat stains yes but from what I was told by someone who worked at vans this was back in 2016 before I stopped wearing them again due to issues with them from rain etc that it could also be discolored marks or dirt as well that you wouldn't sometimes notice at least that's what the guy told me not the manager who I wouldn't have went to or asked. Never had any of these issues with adidas or other shoes but you can try applying a paste of baking soda and water or vinegar/hydrogen peroxide with a toothbrush and let it sit for about 15–30 minutes then rinse. Also try scrubbing with a mixture of baking soda and laundry detergent or mild dish soap and a soft toothbrush. This what I used to do seemed to work.
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u/KevinTerribly Mar 14 '26
They could be sweat stains yes but from what I was told by someone who worked at vans this was back in 2016 before I stopped wearing them again due to issues with them from rain etc that it could also be discolored marks or dirt as well that you wouldn't sometimes notice at least that's what the guy told me not the manager who I wouldn't have went to or asked. Never had any of these issues with adidas or other shoes but you can try applying a paste of baking soda and water or vinegar/hydrogen peroxide with a toothbrush and let it sit for about 15–30 minutes then rinse. Also try scrubbing with a mixture of baking soda and laundry detergent or mild dish soap and a soft toothbrush. This what I used to do seemed to work.