Sparco Safety Shoes Impulse Lucas ESD S3S SR FO HRO, Dark Gray/Fluorescent Green, Size 43. Sparco Teamwork safety shoes in running style with a seamless upper made of water-repellent rip-stop fabric, abrasion-resistant TPU reinforcements, and 3D HF details. The EVA midsole and the “FO + HRO” rubber outsole make the shoes lightweight, versatile, and durable, ready for any challenge. The super comfortable EVA midsole provides unmatched cushioning, enhances dynamic energy return, and reduces fatigue at the end of the day. Impulse: the work shoe that makes you feel better. Upper material: seamless, water-repellent rip-stop fabric, abrasion-resistant TPU reinforcements, and 3D HF details. Includes a second pair of colored shoelaces. Lining: breathable micro-perforated 3D fabric. Removable insole: cushioning-active PU foam with ergonomic thermoforming. Puncture resistance: ultra-light “Zero Perforation” textile fiber. Toe protection cap: non-magnetic fiberglass material, insulating, resistant up to 200J. Slip-resistant, antistatic sole: super comfortable EVA midsole with high energy absorption and FO+HRO nitrile rubber outsole.