The Superfeet Green Insoles are designed for individuals with high arch support needs, specifically catering to women in sizes B (4.5-6) and youth in sizes 2.5-4. Made by the trusted brand Superfeet, these insoles provide the support and comfort required for those with high arches. The unit type is essential to consider when purchasing, as it ensures the insoles are tailored to the specific foot type and size needed for optimal support and comfort.