I bought a pair of men's Glycerin 20 Size 15 (M) (Lime/Red/Ebony) from Amazon. For background, I am 6'3'' and 303Ibs. I also have a damaged left ankle that was surgically repaired in 2020 but still prone to supination. That said, I did a lot of research for a good shoe for walking, not running. All the literature and reviews I found have the Glycerin 20 on their lists as a good shoe for supinators. That was not my results. On my second wear, walking at the mall, the thick heel cushioning gave way turning my foot outward. The left shoe tweaked my ankle so much that I eventually had to cut my mall visit short. Being the guy I am, I gave them a second chance; but this time I offered assistance. I used the orthotics specifically made for my feet to provide support ... MoreI bought a pair of men's Glycerin 20 Size 15 (M) (Lime/Red/Ebony) from Amazon. For background, I am 6'3'' and 303Ibs. I also have a damaged left ankle that was surgically repaired in 2020 but still prone to supination. That said, I did a lot of research for a good shoe for walking, not running. All the literature and reviews I found have the Glycerin 20 on their lists as a good shoe for supinators. That was not my results. On my second wear, walking at the mall, the thick heel cushioning gave way turning my foot outward. The left shoe tweaked my ankle so much that I eventually had to cut my mall visit short. Being the guy I am, I gave them a second chance; but this time I offered assistance. I used the orthotics specifically made for my feet to provide support against supination. It should be noted that these orthotics work in my other (ugly) walking shoes. This was not the case here. Again the heel basically collapsed, turning my foot outward and straining the ankle. I tried it again with different socks, different tension on shoe strings, etc. Nothing worked. Now I am stuck with a pair of shoes that have only been worn a couple of times and no solution for my problem. I hope Brooks reads this and provide some other options.

I really wanted to like this shoe. I haven't worn a Brooks running shoe in many years. I usually wear an 11.5 or 12, but based on reviews, I ended up ordering the 12, which gave me that thumb's width between the end of my biggest toe and the end of the shoe. My feet are also slightly wider than normal, and I ordered the regular width. My toes felt good in the toe box and did not rub on the outside like many shoes I try on. Unfortunately, I think the drop, stack height and/or too thick heel made the shoe somewhat of a chore to walk in. While walking on a walking path for about an hour, I felt like every step was a little unnatural and took a little extra more work than normal. Afterwards, my knees and calves were a little sore. I expect an adjustment period for new ... MoreI really wanted to like this shoe. I haven't worn a Brooks running shoe in many years. I usually wear an 11.5 or 12, but based on reviews, I ended up ordering the 12, which gave me that thumb's width between the end of my biggest toe and the end of the shoe. My feet are also slightly wider than normal, and I ordered the regular width. My toes felt good in the toe box and did not rub on the outside like many shoes I try on. Unfortunately, I think the drop, stack height and/or too thick heel made the shoe somewhat of a chore to walk in. While walking on a walking path for about an hour, I felt like every step was a little unnatural and took a little extra more work than normal. Afterwards, my knees and calves were a little sore. I expect an adjustment period for new shoes, but I did not experience this with my most recent shoes from another brand. The shoes themselves are comfortable, and if I had the money I may have kept them as an everyday, knock around shoe, but unfortunately, they will be going back. Luckily, Brooks has the best try on/return policy of any shoe brand!!

Meh. The Glycerin 20 is a new shoe. Nothing like the 19 which was only a little different from the 18 which was only a little different .... (you get the idea). Perhaps Brooks is trying to copy Hoka with the fat soles? I'm not wild about the looks, but to be fair I didn't notice being taller than usual(and they say the 21 is 2mm taller!). I'll reiterate: THIS IS NOT THE SAME Glycerin. Note, the fit may be more true to size than previous models. I like "roomy" and had moved all the way up to 11.5 with the previous Glycerins from 10.5 for most other shoes, but 11 is more likely right with this model. The heel cushioning is great but the forefoot seems stiffer, a bit of a shock when it struck (wanted some sorbethane). To be fair, it was quite cold, and note that these ... MoreMeh. The Glycerin 20 is a new shoe. Nothing like the 19 which was only a little different from the 18 which was only a little different .... (you get the idea). Perhaps Brooks is trying to copy Hoka with the fat soles? I'm not wild about the looks, but to be fair I didn't notice being taller than usual(and they say the 21 is 2mm taller!). I'll reiterate: THIS IS NOT THE SAME Glycerin. Note, the fit may be more true to size than previous models. I like "roomy" and had moved all the way up to 11.5 with the previous Glycerins from 10.5 for most other shoes, but 11 is more likely right with this model. The heel cushioning is great but the forefoot seems stiffer, a bit of a shock when it struck (wanted some sorbethane). To be fair, it was quite cold, and note that these are *not* cold weather shoes. Glycerins have zero resistance to water (get soaked walking though short wet grass) and breath far too well to keep feet warm. Last, a general comment on previous models which is that Brooks soles wear out FAST. I run several times a week and rotate shoes(so not more than twice a week per pair), but the bottom colored layer starts to peel off long before it should and both the heel edges and center of the forefoot wear down quickly. Gone are the days of long-wearing carbon soles.