My favorite insole is the CVS Men's Copper Foam Insoles [Sizes 7-13, 1 Pair]. The bottom ball of my right foot has been hurting so I added two of those CVS Men's Copper Foam Insoles inside my shoes and winter boots. Then I bought the 3/8" thick Botties Latex Foam Insoles to see if 100% Natural Latex would feel more comfortable; After a few days it felt like the 3/8" thick Botties Latex Foam Insoles were flattening out and they were not as comfortable as having two of my favorite insoles [CVS Men's Copper Foam Insoles] in those winter boots; So because after 3 days the 3/8" thick Botties Latex Foam Insoles started to feel flattened out a little and not as comfortable as they did when I first put them in my winter boots I decided not to buy more of those and to stick with my favorite insoles [CVS Men's Copper Foam Insoles] instead. I've used the CVS Men's Copper Foam Insoles for years and they do not lose their comfort as the 3/8" thick Botties Latex Foam Insoles did after just 3 days; I've only had the 3/8" thick Botties Latex Foam Insoles for about a month; They only lost a little bit of comfort not a lot, but they lost enough to where the CVS Men's Copper Foam Insoles are still my favorite. I'll continue to use the 3/8" thick Botties Latex Foam Insoles until they are no longer comfortable; I've only had them for about 1 month; Because they are so thick they do feel more comfortable compared to other insoles I have tried over the years. For now these 3/8" thick Botties Latex Foam Insoles are my second favorite; Time will tell if they remain my second favorite.