I purchased these for use in my walking boots which are comfortable in use apart from the ball of the foot; hence the purchase of these full length gel insoles.
Cut them to size and fitted them in my walking boots and for the first half an hour whilst out walking I could feel the gel cushioning; however after an hour of walking this feeling had completely disappeared, it was as if the insoles were not there at all!
As I regularly walk 10-20 miles at a time, these insoles do no deliver on their claims and are therefore, in breach of the sale of goods act. The claim of a 30 day money back guarantee [for comfort or faulty products] is also useless as you have to send them back to the US.
So, in summary, the claims that these offer 24/7 comfort is very misleading and I certainly would not recommend them if you are on your feet for more than an hour or two.