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Size chart

Sizing notes

For rock climbing shoes: Choose soft shoes two to three sizes smaller than your street shoe size. We recommend you fit your trad shoes one to two sizes under your street shoe size. Remember to factor in stretch. Unlined slip-lasted shoes tend to stretch about one full size. Lined shoes stretch about a half size. Remember: a well-fit comfortable shoe will work better than an ill-fitting tighter shoe.

For boots: Add one half size to your street shoe size. You should be able to slip one finger behind your heel when you are standing up with the boot unlaced and your toes touching the front. If the boot is too short, your toes will get smashed walking downhill. Too long and your heel will slide up and down and give you blisters.


Rated 5 out of 5 by from I'm calling these "approach boots" As a rock climber, I often have to carry 50+ pounds through 2-3 mile hikes, leading to class 5 scrambles to get to the face climbing. With knee problems, I needed approach shoes with enough support to manage the weight of my pack, enough grip to handle the scramble, the ability to go through creeks without weighing down, and a versatile enough shoe to be comfortable in 30-90 degrees Fahrenheit. These do get a little warm in the heat, but not unbearable. As for everything else, these hit the mark! I'm very pleased! I have narrow feet with high arches and I purchased my regular shoe size. They fit perfect and did not need any breaking in.
Date published: 2017-06-06
Rated 5 out of 5 by from Great boots tested on Mighty 5 Utah National Parks I bought these boots last month at the recommendation of an REI associate, and after comparing to multiple other hiking boots. As an avid distance runner used to flat road running shoes, these boots were the most comfortable. When you put them on, you'll feel a "spring" not felt with other boots. I broke in the boots inside my home for two days before hiking the Mighty 5 Utah National Parks. The boots felt SO great on the trails, despite a short "break-in" period. The boots are a little more pricey than some others, but well worth the money. I am typically a size 9 running shoe, and the size 9 hiking boot worked well for me.
Date published: 2017-04-10
Rated 5 out of 5 by from In love with these... I'm not going to disparage the brand of my prior hiking boots, but, after doing a pretty rigorous 70-mile backpack in Sweden, I left them behind... while I probably won't do that particular backpack again, I don't think I would leave these behind. My others were very sturdy and never left me with a blister, but, they felt "hard" everywhere (don't know how else to explain it). From the moment I put these on my feet, I knew they were my next boot, they feel sturdy (i.e. soles will protect from rocks, etc. when carrying weight) but inside so cushiony (like pillows)... my first trip out on a shorter backpack, I have zero complaints, even a small test through water, liked the grip the soles gave on different terrains (I live in Arizona).
Date published: 2017-03-28
Rated 5 out of 5 by from The best boots I've ever worn I bought these boots for a Mt. Kilimanjaro trek and can honestly say that these are the most comfortable boots that I've ever worn. I was on my feet for 18 straight hours on summit day while climbing and then aiding a mountain rescue, and my feet and ankles felt great! These boots can handle dirt, rocks, and 60 degree scree slopes with the best of them. I found the boots true to size (I wear a size 10 running shoe, a 42 in nordic ski boots, and got these in a 42). The waterproofing worked perfectly, the boots felt completely broken in straight out of the box, and the soles have a nice spring to them that I haven't found elsewhere. I'm ordering another pair right now!
Date published: 2017-10-09
Rated 5 out of 5 by from The smartest stupid purchase ever! Defying all conventional wisdom, I bought these boots last week one day before my hike up Mt. St. Helens. Right, who would even think of doing that?? Well, me - and guess what: I was the only one in our group of 4 who didn't have blisters, or even sore feet. These are the best boots I've ever worn. Light weight, great support yet flexible where they need to be, and nice sticky Vibram soles. REI sales guys both were great in guiding me up a full size since these are not only European sizing but come in rare (for Euro shoes) half-sizing so my fit was perfect. Love them!!
Date published: 2017-08-30
Rated 5 out of 5 by from Can't say enough good things! I bought these boots the day before I was hiking the Juan de Fuca trail on Vancouver Island, when I realized I'd left my old hiking boots at home. I was nervous about not having time to break them in - doing such a big hike with a brand new pair of boots isn't a smart plan. But these boots were perfection. I didn't experience a single blister or hot spot on the 4 day trip. They are by far the most comfortable thing I've ever had on my feet. I did the trail mid May, and it was rainy and beyond muddy, and these boots kept my feet dry the whole time. Feel nice and light on, provide great support and have a kind of spring or bounce to them that is awesome. They are dream boots - can't recommend them highly enough!
Date published: 2017-05-19
Rated 5 out of 5 by from Feel like I've worn them for ages I was initially attracted to the look of these boots, which are slick and fun, but was instantly blown away by the fit as soon as I put them on. They feel broken in from the start and have amazing traction that held it's grip in sand, snow, and slanting terrains. They look brand new, but feel like an old faithful boot. I have a fairly narrow foot and I get no slip and feel snug in these boots. Run true to size.
Date published: 2017-03-24
Rated 5 out of 5 by from Awesome boots! So I have never been a boot girl but as I get older my feet need more support particularly for backpacking. I was looking for a boot with more support than my low top Solomon hikers (Which I love!) but that weren't so stiff as to rub or hurt my ankles etc. These boots were right on the money. I broke them in on a 5 mile local hike with no hike and they felt perfect. The next test was a 30 mile backpacking trip that had a total of 4,633ft elevation gain. Boy was I glad I had these boots on this trip. I had the extra ankle support, the higher top which kept more debris out of my feet, and waterproofing which made walking through soggy meadows no issue at all. My friend had Keens and her heels were blistering but we both have narrow feet so I have a feeling these boots would work better for her too. I only had one blister after the 30miles and that is because I have pretty bad hammer toe and no shoe can fix that. Over all I would highly recommend these for other non-boot lovers who want a comfortable boot without all the stiffness. Next trek for these bad boys will be a section of the Iditarod in Eagle River AK and I am confident they will perform. Thanks La Sportiva!!!
Date published: 2017-06-19
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Questions & Answers

Is the toebox roomy enough for bunions?

Asked by: Lillian
These boots run true to width and they do not have a particularly wide toe box. If you have a narrow foot this boot may still work, but if you need a wider boot to accommodate your bunions, this boot may not be the best choice.
Answered by: REIservice
Date published: 2017-07-18

Does this boot come in wide style?

Asked by: Erblau2000
​La Sportiva does not make these boots in a wide width.
Answered by: REIservice
Date published: 2017-07-18

Is the toe bed wide?

Asked by: JBPT
These boots run true to width and they do not have a particularly wide toe box.
Answered by: REIservice
Date published: 2017-07-18

Is this boot sufficient for longer backpacking expeditions? If not, what brand/boot do you recommend for such extensive use?

Asked by: bethany14
If you are planning to pack light on your backpacking trips these boots will be a fine choice. However if you are planning on carrying more than 30 lbs. we would recommend going for a heavier duty backpacking boot, found on the link below:
Answered by: REIservice
Date published: 2017-06-06

Some say these boots are breathable, some say they are hot and sweaty. What make this a changing variable? Does it depend on the socks? If so, what socks are recommended to prevent hot pruney toes?

Asked by: Cail1021
Customer experience with breathability can vary due to a few factors including; socks, metabolism, perspiration, outside temperature, condition of the boot and more. However, the membrane in this boot allows for fantastic breathability.
Answered by: REIservice
Date published: 2017-07-18

How do these shoes compare with the La Sportiva Core GTX?

Asked by: tchang332
These shoes are very comparable to each other. The Nucelo is designed to be light and fast with durable Nubuck leather uppers and waterproof Gore-Tex Surround technology. They are very breathable and weigh just 13.4 oz. The Core is a fully synthetic hiking boot that also has the Gore-Tex Surround technology and weighs 13.3 oz.
Answered by: REIservice
Date published: 2017-10-30

Where are these boots made?

Asked by: ADK bound
This item is made in China. Please keep in mind the country of origin can change over time and some items are sourced from multiple countries.​
Answered by: REIservice
Date published: 2017-07-18

Are these boots compatible with crampons?

Asked by: geckostar
We do not recommend using these boots with strap-on crampons as the sole is not stiff enough. Instead we recommend using winter traction devices:
Answered by: REIservice
Date published: 2017-12-07
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