Siga is an orthotic-friendly slide on the Low Flexi Collection. This slip on style features NAOT's removable anatomically-correct cork and latex footbed which is wrapped in soft suede which molds to the foot with wear. The Low Flexi Collection features a 1.5" polyurethane sole which is extremely lightweight and durable. Ridged patterns on the bottom of the sole unit allows for flexibility, durability and grip.