Us/ca sizes: men 10-11, women 11-12enertor comfort & protect everyday insoles have been proven to help heal plantar fasciitis. It’s an advanced shock absorbing insole to help protect against injury.features:durable moulded sole for improved fit and support. D30 smart material reduces shock by 44%* to protect against impact injuries.proven to help heal plantar fasciitis**faster healing of a variety of foot, ankle, leg and knee painflexible, lightweight and suitable for all types of footwearis 60% thinner than premium foam insoles but offers 61% more protectionis weight agnosticlasts up to 7 times longer than premium foam insolesenertor heel cups are enhanced with d30 technology; a patented shock absorption material that, in its flexible state, cushions the heel. On impact the d30 material molecules lock together to absorb shock and provide superior protection. D30 is a smart material that cushions the foot when moved slowly, but locks together on impact to absorb and disperse energy, before instantly returning to its flexible stateenertor heel cups are engineered to offer long-term pain relief in the heel area and reduce injury.30-day 100% money back guaranteeworn and endorsed by usain bolt: i really love enertor insoles. They help me stay injury-free and to perform better.dr. Sue barnett podiatrist at university of the west of england bristol: the inclusion of d30 in enertor insoles is an exciting feature which is beneficial for many sports as the innovative material enables the insole to instantly respond and stiffen proportionally to the force applied, giving effectively customised behavioural properties. Robert grainger msc mcsp hcpc cscs: as a former sky pro cycling team physiotherapist i use enertor comfort insoles in my clinics to treat heel and plantar fascia pain and reduce the chance of lower limb sports injuries.foot pain / ankle pain / leg pain/ knee pain/ hip pain*as validated by leading independent test house. Independently tested by satra**69% of sufferers reported enertor helped to heal plantar fasciitis, 120-person study, uk jan 2017instructions for use: remove existing insole and insert enertor insole. If you need to trim the forefoot, use the insoles you removed as a guide and trim enertor insoles to match. Washing instructions: hand wash in cool water with a mild detergent and then air dry away from direct heat or sunshine. Important: if pain persists seek medical advice.green dot north america certified. Pet-1 recyclable. C e mark – european conformance.