Microfiber Material: Microfiber Contents: 1 pair The SIDI Comfort Fit insoles are made of ergonomically shaped foam and come with an antibacterial treatment. With perforation for optimal ventilation.

microfiber The Sidi SRS Soles in Yellow/Grey are replacement treads for Spiders and would also fit pre-carbon Dragon soles and could also be used with other earlier (non-carbon) SRS soles This tread is softer than the original Dragon compound.