Superfeet Run Support Medium Arch Insoles - Trim-To-Fit Low to Medium Arch Support Inserts for Running Shoes - Professional Grade, UK 10 – 11.5

I tried the blue variant before which I've found them quite stiff. These have those green gel pods, which admittedly I thought they would be a gimmick. Tuens out, they make all the difference in the world. The blue foam is also noticeably softer, but not pillow soft (something along the lines of a squishy rubber in terms of stiffness), so they should last for a long while.

Bought thin version to go with socks that are thicker than I expected. Sizing is generous eg size F (10-11.5) is the same length as the original insoles in my size 12 boots. Superfeet insoles give each step a quicker rolling forward action which spreads the impact from the heel along the whole length of the foot. Worn inside lightweight walking boots my initial impression was "WOW these are brilliant!" and I notice the most benefit when walking on tarmac & hard surfaced paths. No more sore heels with these insoles.

Replaced the insoles from my Nike running shoes with these and I have to say that are great, I have recently done a 50k challenge and not a blister in sight!