The insole is a versatile accessory that is suitable for all types of shoes. Its unique design provides protection against sharp objects and prevents them from penetrating through the sole of your shoe. Whether you're working in construction or hiking in mountain, this insole is a must-have for anyone who values safety and comfort. Features - Color: Grey -Material:Stainless Steel -Size:24.30X12.50X0.10cm/9.55X4.91X0.04in(size: 38) -Size:31.50X13.00X0.10cm/12.38X5.11X0.04in(size: 46) -Provide protection: These shoe insoles provide feet protection for your daily walking and sports use, has good anti-nail and puncture resistant effect -Sturdy:Adopting sturdy stainless steel materials, the boot insoles can offer protective performance -Versatile: Practical shoe insert for men can fit for any industry, such as construction, manufacturing, agriculture, forestry, etc, serve you better -Easy to use: Light weight, these stainless steel insoles for men are easy to use and insert, will not deform or break - Safe to use:Turn your daily shoes into puncture-proof work boots, hiking boots, safety shoes and professional shoes easily Package list: 1 x Pair of Stainless Steel Insoles