Spenco Orthotics, in my opinion, make the best running shoe inserts. I have used Spenco Orthotic inserts for years and they have been durable and sturdy, with outstanding cushioning.
The SPENCO® POLYSORB® Cross Trainer Insole has been a crucial running aid for me. It has allowed me to train hard, with interval training, and stay completely away from shock-related running injuries.
* Cushioned heel strike zone.
* Cushioning in forefoot.
* Optimum shock absorption.
* Lightweight polyurethane base.
* Recommended by podiatrists.
* Durable cover.
* Easily modified with scissors.
* Good for court sports.
* They provide a contoured heel cup and arch for even more comfort.
I am 6'2" - 185 lbs and these have held up fine for me. They come with a 1-year warranty, but mine have easily lasted two years. I run about 25-30 miles per week, but a lot of it is interval work. I assume the Spenco Orthotic inserts would be fine for guys who are heavier or put in more training miles.
I've been very happy with the comfort and the injury-prevention features of these running shoe inserts. I've tried others, many years ago, but it was like running bone-on-bone. Actually, I got the Spenco Orthotic inserts because I liked my Spenco gel biking gloves so much. It turned out that their running shoe inserts were the same high quality.