Insoles with excellent puncture resistance, ideal for construction and demolition work. - Product Name: Puncture Prevention - Sizes: S (24.5-25.0 cm) / M (25.5-26.0 cm) / L (27.0-28.0 cm) - Application: Protects the soles of your feet during construction and demolition work - Features: Uses stainless steel with excellent puncture resistance Thank you for viewing. I purchased these several years ago and have been storing them. They are unopened, but the outer packaging is damaged, so please be aware of this if you are concerned.