Slimflex Carbon Insoles The Slimflex Carbon Insoles are full length shoe insoles which contain EVA with a rigid heel stabiliser and are more durable than our Slimflex Plus Insoles which makes them ideal of heavier patients requiring additional functional support. The Slimflex Carbon Insoles are covered in a quick dry, moisture absorbing material and provides support to the medial and lateral arch. Research has shown that the Slimflex Carbon Insoles can be used by Rheumatoid patients. These can be also be used in conjunction with our Podotech range of wedges and components for a customised and more advanced biomechanical fit. Slimflex Carbon Insoles Sizing Slimflex Carbon Insoles are available in all UK shoe sizes from UK size 3 to UK size 12. Please select your shoe size from the drop down menu above. Please note that this product was formerly known as the Slimflex Plastic Insoles. Customers may continue to receive this version for a limited period.