Quite pleased with these. I picked them up to replace a pair of 5.10 Prisms that had overstretched. I compared the VS against the Miura laceup and Evolv's Pontas. My feet are pretty flat, with a low arch and wide front. The Miura laceup had a weird dead space above the toe, and the Pontas was too narrow. The VS just fit my feet perfectly, and had the added bonus of a downturned toe. So far, I've only used them bouldering in the gym, but they have amazing edging and cling to holds on overhangs. In addition, the last is stiffer than my old Prisms, so I'll be able to use them on outdoor sport routes without feeling like every crack is torture.

For sizing, I went with a 41.5 compared to my size 10 (43) street shoe. I also found the "size 0.5 down from Miura" to work. I went to a local R*I to get base sizing off those, then was able to confidently order the VS online.

I got these in 38.5, which turned out to be slightly too big. They are also a bit more aggro downturned than the Miura lace ups but nor quite as aggro as the Testarossa's.

For reference, I am a solid 38.5 in wmn's Sportiva Katanas & Miuras lace ups. I am a 38.0 in Sportiva Solutions & 39.0 in Testarossa's. Not that comparing boot sizes help for rock shoe sizing, but FWIW, I am a 40.0 in Sportiva Nepal extremes & 39.5 in Sportiva Baturas. I wear US wms 8.5 in street shoes.

Being a devout sportiva fan all I can say is that these things are sooo sick!. I use these primarily for bouldering and the super aggressive last is just perfect.

Not a single dead space in the entire shoe, super aggressive toe, perfect edges, amazing as always miura heel and the 3 velcro straps allow for a super precise fit. In the toe area it even looks like sportiva looked into remolding the rubber to fix that separation that happens with the bottom rubber and the upper rand (common to almost every sportiva shoe ive owned).

In terms of sizing I agree with the other reviewers when they say a 1/2 size down from your regular Sportiva size. Im a 40 in Vipers and Katanas, a 39 1/2 in Venoms , and I ordered a 39 1/2 in these and they fit very snug but not unlike any new shoe (like I said, I use these for boudlering so I like a tight fit.)

These climbing shoes are the best! They edge like nothing else, very aggressive and won't let you down on tiny chips.
I wear 44.5 regularly (street shoes) and I got 42. They used to kill my feet at the beginning, I could barely climb the first couple times I went on the wall w/ them. But now they stretched a bit and they're fine. I still can't walk around with them for too long though. Each session takes a bit of easing in. I would go for the 42.5 for my next pair.

I got them too big for me. I wear a 42 in the Katana (super tight), and a 42.5 in the Testarossa (perfect fit) and thought a 42.5 would be great...I was wrong, they seem to be sized big from what I saw.

Excellent edge, toe seemed to wear out a little to fast. After buying these shoes they did stretch a little more then expected to down size an extra half from the lace ups.

These shoes are good for everything. The only complaints I have are I wore through the toes in three months of outdoor climbing and I got a hot spot on the knuckle of my big toe. They perform very well.

It seems that La Sportiva has once again done it. These shoes are totally sick! I used to love the old Miuras, and they worked great. When it came time to find a new shoe, I considered getting the newer Solutions by La Spotriva, but ended up waiting for these. Like the Solutions this has a really downturned toe, with their P3 platform. A buddy of mine has the Solutions and loves them, but the main difference I have seen is the Miura vs has more edging ability to it. With the radical toe downturn it works great for overhangs, but also for any type of climbing all around. I totally love these shoes. Props to La Sportiva...

After reading so many mixed opinions / experiences about how to size a climbing shoe, I took a chance and originally bought these 3 sizes down (like La Sportiva says so). Man did they hurt, I could climb in them, but for a primary gym shoe... dropping off a 15ft boulder problem left me wincing in pain.

I quickly returned them and went 1 1/2 sizes down and now they're almost perfect. Just read the description for the performance of this shoe - it lives up to it. Just make sure you size it right! I'm a 39.5 (mens) and my pair are a 38. Definitely wouldn't go any bigger.

These shoes are pretty comfortable considering the angle and how tight they are, I have no problem wearing them for a couple hours non stop.

I wear a 45-46 in normal shoes and a 43.5 in these.

The edging is very solid on these shoes and the sole platform gives a lot of stability to your foot without loss of feeling.

My only gripe with these shoes are the top of the shoes. The closure system is fast an comfortable but the shoes have no grip for toe hooking. I found these shoes make it pretty much impossible to get any really solid hook unless the rock is very sharp.

Has anyone had both shoes? I have had testorossa and venoms in the past and now im deciding between the boosters and miuras. Two very close shoes please help!

I love my original Muira's, so I thought I'd try these out. They are a more aggressive shoe with a bit more radically downturned toe. This is a great steep route shoe. A reviewer below stated that he thinks they are bigger than the original Muiras. My velcro's are easily a 1/2 size smaller than my original Muiras. I would advise getting a half size larger than what you wear in the lace up Muiras.

Finally got my pair of these and and they are breaking in nicely. I did size down a 1/2 size from my Miura's and I still think this is the way to go. (42 in Miura/41.5 in Miura VS). Had to wear them at home while watching TV (which sucked) to get them stretched out a bit, then shifted to bouldering in them for a bit and now they are stretching out and breaking in to be my tech trad face/crack shoe. They do stretch but it takes some time and pain equity. The nice thing is that when they do break in they become really comfortable, but stay very precise and technical.

I've only tried these on, but I agree sizing down 1/2 size from your normal Miura size is the way. I've heard the same thing from other climbers and shop employees who've used them. Word on the street is that they are rad and better than Miura. I'll report back after I get my pair.

My old Muiras are a 44-1/2 so I ordered these in the same size and they were noticably bigger by a half size. I exchanged them for a pair of 44's and they fit perfect. I hope this saves everyone from the trouble I went through. These are amazing shoes, especially when they fit!