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Put an IPod Nike+ Sensor in Any Running Shoe in One Minute for 5 Cents : 4 Steps (with Pictures) - Instructables
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Amazon.com: Professional Arch Support Sport Insoles for Women&Men,Plantar Fasciitis Running Shoe Inserts Shock Absorption Athletic Shoe Insoles for Flat Feet Pain Relief-Reduce Muscle Soreness Orthotic Insert S : Health & Household
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Amazon.com: ORHILYA PU Running Shoe Insert Athletic Cushion Women Heel Pain Relief Comfort Shock Absorption Sport Insole, Men Training Walking Hiking Orthotic Gel Insole for Sneaker, M : Health & Household
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This plastic hole filled with a foam insert underneath Nike sneaker sole insert, only in the left shoe : r/whatisthisthing
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