From Superfeet:

Engineered for high-impact activities, with slimmer heel and arch length to better fit the proportions of women's feet and an energizing foam pad at the forefoot. Superfeet All-Purpose Women's High Impact Support insoles give you structured support where you need it most, helping redistribute forces to reduce stress and strain on your entire body. Designed to replace the removable liner in roomy women's footwear. Trim to fit your shoe size.