it is not slipping up and down but if you imagine that the part that is threaded into the crank arm as a neck, it's like a little bobble head -- very easy to wiggle, but the range of motion is quite small.
it is a suntour pedal -- looks like this: http://2.bp.blogspot.com/-wumxEXj84mU/Tr4dd8LsIlI/AAAAAAAABm0/eGIEns4f0hk/s1600/Suntour%2Balloy%2Bfolding%2Bpedals.jpg
― Philip Nunez, Wednesday, 29 January 2014 03:24 (ten years ago) link