These are incredible. Couldn't even feel them on me! Super comfortable light weight and they will keep you safe. I highly reccomend these to anyone.I bought these super aggressive crampons because I was attempting Rainer with no snow - that means rock, sand and raw glacier. These are incredibly aggressive spikes. The fitting system is the best I have ever used. There are usually on the pricey side but I got them on sale for around 90 bucks. I can't go back to older brands after these.Super aggressive spikes, easily adjustable for different shoe sizes... clicks in perfectly with my La Sportiva G5’s.. couldn’t be more impressed with their craftsmanship... would buy again