Love these things. Have several pair actually as I keep a set in each car plus a pair in my backpack gear. Lifesaver, almost literally, here in Montana in the winter. Definitely a lifesaver hiking Grand Canyon trails in the winter months. No problem with sliding off a cliff so far. Tried a couple other brands but the EXOspikes are the best for hiking. Easy to put on and they stay put. No rolling off like the other brands tend to do.I have used the Microspikes for many years and they are my gold standard. I bought these for conditions where there are trail sections of ice and sections of dirt because they seemed less aggressive and more suitable for dirt/rock conditions. I have worn them four times.First and most importantly is the size problem. I wear a size 12 boot. The XL Microspikes fit great and easy to put on the regular hikers and heavier insulated winter boots. These Exospikes in XL only fit my size 12 boots after a big struggle in my living room sitting down. I left them on my boots for a few days to hopefully stretch them out a bit. This helped putting them on again. However, when trying to put them on during a hike, when they are cold and less stretchable, another struggle and I had to sit. So if you wear a boot greater than a 12, forget about getting these on. Come on Kahtoola, you need to made these in XXL. I keep them stored at home on the boots for continued stretching.Performance on ice was great. They dug in well and I had no slippage. I don't know how they compare to the Microspikes, which would still be my go to traction devices in severe steep icy trails without patches of dirt. They weight about one half as much as Microspikes.Durability I guess would be marginal given that the bottom is made out of a plastic type of material rather than stainless steel chain (Microspikes), particularly if they are worn a lot on dirt/rock sections. With these concerns, I would still recommend them for spotty ice/dirt conditions. Even if I only get one or two seasons use, it is still much cheaper than a broken wrist or hip. I don't recommend them if you wear a boot or shoe size greater than 12.These have taken me from penguin walking on my daily walks with the dog to confident strides. They give me good traction on all but mirror smooth ice. There I still need to walk cautiously. I would have given them 5 stars but for the fact that the neoprene? snapped on one side. They are still staying on but I didn't expect that though maybe I should have. I've using them on winter boots, not shoes. A size small is supposed to fit up to a size nine shoe. I reasoned that my size 7 boots should be roughly equivalent to a size 9 shoe. Guess I should have ordered the medium. I'm in MN so need boots for warmth, my feet would be icecubes if I went out wearing shoes.Better info on sizing would be helpful, mayb giving how many inches they will stretch to fit.--I purchased these originally for my daughter and son-in-law who are constantly walking with their 1 year old daughter in a backpack type carrier. The weather in our area of Virginia quite often creates icy conditions as we get a fair amount of southern moisture mixing with artic air and then freeze remelt cycles. See the pic of our road. To date these strap on spikes have been absolutely wonderful. They do require a little effort to pull on but that means they stay on. They are well designed with pull tabs in the back to help put them on. They also seem to to be reinforced properly in the right areas and are holding up well. Since the beginning of January we have had constant icy conditions and these have allowed us to take our walks without hesitation. They are expensive, but if they perform this well and continue to hold up they are well worth it. We have tried cheaper ones and there is no comparison. We actually purchased 4 sets and all 4 people have had the same result. I would definitely buy again. This covers about 4 weeks of use probably averaging 5-6 days per week of use. Walking 1.5-2 miles per day.I hiked 8 miles in fresh snow in this pair of traction devices. I was wearing Hoka trail shoes and got to the top of San Jacinto summit after an all-day snow storm passed by. It was slippery coming down from the summit so I put them (my first time wearing them) and hiked 8 miles down the mountain with no issues. They are comfortable and they kept me from sliding or slipping. I also like that they are light-weight and very compact and easy to carry in my backpack. For me, they worked perfectly.I have only completed one run, but I'm very happy with the Kahtoola ExoSpikes so far. I am a trail runner in Northern Ohio. We get lots of snow and frequent freeze-thaw-freeze cycles. I am usually able to find enough traction on the trails and haven't felt the need for additional traction devices. That changed last weekend. A friend and I were out on an 12 mile run and most of the trail was icy with a dusting of new snow on top. We managed pretty well, but it was dangerous and exhausting. Conditions for this weekend looked similar, so I researched the options and chose these spikes. We ran another 12 miles this morning and I am sold! The trails were in better condition today. They were packed snow, with some icy patches; so not as challenging as last week. I had fantastic traction at all times and hardly noticed the spikes as long as I was off-road. I experienced zero slipping going up hills and confidently ran down hills. It was a much better experience than my earlier runs this week (same conditions, but without spikes). We had a short road section and they were obviously noisy and out-of-place there, but that is to be expected.They go on and off very easily. The product insert recommends going up a size if you plan to use them on boots. I would add shoes with a large midsole to this recommendation. I have size Large and they fit my size 11.5 Hoka Challenger ATR shoes. I feel like they would be easier to put on in a larger size. They hold securely and showed no sign of slippage. My running partner noted that they go on and off easier than the other big brand that he had previously. After 12 miles of trail running, they show zero wear and seem like they should last several seasons. Overall I am very pleased with these spikes and look forward to many miles in them.Pros:-Good traction and stability. Excellent for Canadian cold winters.-Very durable, long-lasting.-Nearly unnoticeable when walking, after getting used to it.Cons:-May not fit every shoe size or type.-First time users might feel uneasy when in use.-Extremely rare occurances of gripping when on certain soft material surfaces.Full Review:I purchased these shoe exospikes for a slippery and icy Canadian winter in Alberta. They still work great to this day and will be used for the upcoming winter!Inside the package, there is the exospikes themselves, a manual, and instructions. The guide is easy to follow, and I had the spikes placed securely on my shoes within ten minutes.The day after I received them, there had been freezing rain, with -20C to -30C cold temperatures. When I looked outside, the entire sidewalk was covered in ice, and portions of the roads as well. Firmly fastening and tightening them, I headed for a walk to test how they held against the outdoor conditons.The first couple steps I took with them felt uneasy, but when I expected to slip on the ice, they gripped on and prevented me from suddenly sliding. Afterwards, they held up the whole 45 minute journey, and although for the first five minutes it was uncomfortable, I soon got used to them and carried on.When I returned home, they still retained their subtle, but durable spikes on the bottom, allowing me to go up the stairs towards my front door without any problems. Once I got inside, they were easy to take off, and I left them to dry.For most instances where I needed to go out afterwards, such as grocery shopping or taking walks, I almost always used these for a safe trip. Only when there was not as much ice, I did not wear these as when walking on softer floors, like in certain stores, the spikes would infrequently grip the threads and make it harder to walk around.Overall, these exospikes worked great, and held up to the extremely slippery conditions. They are very durable, lightweight, and will work well for other similar environments one may face. I am definitely using these for the upcoming winter here in Alberta, Canada, and I recommend these extensively for any person with similar outdoor conditions. I rate these 10/10!I've only used them a couple of times. Both times were on long steeply graded trail hikes which had compact snow and Ice. What a difference, I hiked the trails effortlessly without incident. I couldn't imagine attempting the hikes without them I'm sure I would have fallen several times.They are comfortable to walk with and so far appear quite durable but I guess time will tell. Takes a little bit of effort to get them on but once on they stay in place and do not require any adjustment on the trail.1st impression the wife and me have no regrets with the purchase.Harder to walk on pavement than 15mm spikes from "Life Sports Gear Spike One" I wasn't expecting that – considering the exospikes are much worse on ice & snow. Also; the exospikes were hard to put on.Large size fits snugly on Mens size 10 hiking boots. Might fit an 11 but if you wear Size 12 i'd recommend going up to XLGood traction on ice. Spikes are noisy on bare pavement but not slippery. Good traction on snow as boot tread shows through unlike other brands that cover most of boot tread.Very pleased with this purchase. I bought large for women's size 10 boots. Fit very well with good overlap on boots for secure fit. Relatively easy to put on/take off. Excellent grip on ice and snow. I am able to walk my dog in icy conditions with confidence knowing I won't slip.