They have a valve that connects to the lip of the shoe. When I put my foot down my foot pulls it back making it very uncomfortable.
π₯ Reebok Cross Trainer Black Rubber: Superior Performance and Style Unleashed
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Optimized Cushioning Running Shoes: New Balance 481V3
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π Nike Force Trainers White 315122 Men's Shoes: Elevate Your Style and Comfort
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π Optimized Brooks Men's Ghost Running Shoe
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