Crankwork adapters convert your clipless pedal to flat platform with traction pins - Bikerumor
Wahoo Fitness Speedplay Comp Pedals - Components
Bike Pedals & Straps : Bicycle Parts | State Bicycle Co.
Speedplay - Platformer 2.0 for Zero and Ultra Light Action pedals makes riding your bike in street shoes a breeze. Perfect for a ride down to the coffee shop or to the
Amazon.com: SABLUE Universal Clipless to Platform Adapters Cleats Pedal for SPD Shimano Speedplay Bike Cycle (L-Black): Home & Kitchen