Those are shoe plates that fit into the rear plate of the traditional cage pedal. Actually, those shoes aree relatively modern. In the 70s, cycling shoes had leather soles and you had to screw or nail shoe plates directly into the sole.
@yoav started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
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Those are shoe plates that fit into the rear plate of the traditional cage pedal. Actually, those shoes aree relatively modern. In the 70s, cycling shoes had leather soles and you had to screw or nail shoe plates directly into the sole.