The Sof Sole Memory Foam Insoles have been designed with a range of features to help improve comfort and support. The following benefits are included to provide you with reliable comfort and pain relief: Comfort Underfoot: Sof Sole memory foam improves comfort in dress, casual, and athletic shoes for all-day support Durable Support: High-density polyurethane material provides reliable durability Heel Support: Deep heel cups increase support provided to your heels Improved Fit: Sof Recall memory foam naturally adjusts to the shape of your foot Lightweight Design: Construction is lightweight to ensure they do not bulk out your shoes Option: UK Size 3-5 | EU 36-38, UK Size 6-8 | EU 39-41, UK Size 9-10 | EU 42-44, UK Size 11-12 | EU 45-46