Some history. I started riding mountain bikes in 1991 if I recall correctly. Back then it was Toe Cages guaranteed to assist in a cluttered crash. My first mechanical pedal was this 400 lb (each) Shimano SPD's. These were mud trapping, unpredictable releasing metal grinding on metal hunks of new innovation. After so many failed releases and slow fall over crashes, my elbows got tired of it and we looked for options. So we got sponsored by Onza and their new elastomer sprung pedals. Super light, but with very unpredictable release. The elastomers added to this unpredictability as they were temperature sensitive. On hot days they would release too easily, and on cold days it could be very difficult... Enter Speedplay Frog's. (I hear Angels in angelic unison singing as a light beam washes down from heaven onto a pair of pedals). They come in 3 spindle types. Chrome Moly, Stainless Steel, and Titanium. I have always used the Stainless Steel model. They are super simple, super easy to set up, and super duper easy on your knees. In fact, I was having knee problems during my racing years and when I switched to Frogs the knee issues disappeared. Not much has changed in design for Frogs in several years other than the cleat design. They are more one piece milled than parts assembled, nowadays. You don't step onto Frogs. You slide forward into them. The elastomer driven latch simply expands the front catch, which locks you onto the pedal. You hear a slight click and you're in. To release them, you simply move your heal outwards and they simply let go. There is no tension for release what so ever. Plus you have significant float for your knees because there is no tension springs. Set up is ridiculously easy. Attach the cleat just barely snug to your shoe and adjust to the point your cleat hits the inside pedal stop on the pedal before your shoe touches your chainstay and then lock them down with the two bolt system. There is a swivel stop on the inside of the pedal to prevent you from moving your heel too far inward once adjusted. Because you have 100% float there is no worry of getting your cleat "just right". To grease them there is a small Phillips screw you unscrew and then use a standard "press against" bicycle grease gun. Inside is a combo bushing/bearing system. I grease mine once a month just cuzz. Advantages: Easy set up Easy to grease 100% float for your knees No body is going to ask to ride your bike, because they now can't clip in... No unpredictable releases or non releases due to springs and tension Two point connection to shoe for a more stable lateral platform Challenges I have had with Frogs. For some reason, and I seem to be the Lone Ranger on this one... but I break cleats. In particular the locking tab on the inside on my right shoe. I have talked to Speedplay about this at the tier 1 support level and they say this is unique to me. I do have my right leg 1/2 inch shorter then my left and tend to roll my ankle out on my right side (the side I break most all my cleats on), I'm always over working the inside catch of my cleat, so this is believable. I replace my cleats once, occasionally twice a year. At $33 bucks for cleats I still find it worth it for the advantages the pedal provides. Like @john_hovard mentioned in a Speedplay Syzr Pedals review by @noLungs here in the Pedals Forum, he has broken the plastic shell a couple of times. I can only recall breaking one in 20 years so I consider that acceptable collateral damage for me, and I enjoy the rocky technical pedal bashing trails. Disadvantages: Nobody can ride your bike as they are not SPD compatible in the least I have a tradition of breaking cleats (fairly unique to me however) It's possible to break the plastic shell In summation, many have shy'ed away from the Speedplay Frog pedal simply because they are different. I strongly suggest this pedal for a number of reasons listed above. I have thought many times of moving away from my cleat breaking habit, but looking at the other options, I easily come back to Speedplay Frogs. Out of all the cycling advancements through my years of mountain biking, this is the only product I have stayed loyal to due to overall performance.