Sizes Available:
B: 5-6
C: 6.5-7.5
D: 8-9
E: 9.5-10.5
F: 11-12
(note: sizes are generous, theres usually plenty to trim, for example I wear a size 9 but a size C (6.5-7.5) fits well, and a size D will need some trimming)

Sorbothane, Inc. introduces a newly engineered line of performance Sorbothane® Ultra Work/Sport insoles that are ergonomically designed to provide more cushioned support and shock absorbing comfort. The new Work/Sport insoles feature expanded Sorbothane® inlays that absorb more shock and help relieve more pain in the feet, knees and lower back. These versatile, lightweight replacement insoles provide arch support, comfort and even more Sorbothane® shock protection.

Sorbothane® is the only insole material that absorbs up to 94.7% of impact shock. Unlike standard insole materials, which can bottom out and lose effectiveness, Sorbothane® never waivers under any conditions. Durable and comfortable, Sorbothane® Ultra Work/Sport insoles retain their orthotic benefits and shock absorbing properties month after month. Lightweight and antifungal, they also breathe, which makes for a much cooler insole.

Sorbothane® insoles have been highly recommended by doctors, sports medicine specialists and professional trainers for decades. Sorbothane® insoles have proven to be the best defense against foot pain, back pain and impact-related injuries such as Achilles tendonitis, runner’s knee and shin splints.

For more info: http://www.rxsorbo.com/sorbothane-ultra-work-sporttm-insole

Comments by Gary:
I've tested and will continue to use these. They really help protect your feet from impact injuries, which I need since i'm like OLD.