Sole with AirTech + Tpu-Skin ultraflex tread for maximum flexibility. high anti-fatigue effect while walking; the tread thickness is considerably reduced to further absorb impact energy and distribute body weight more quickly. Water-repellent greased leather upper for water, moisture and vapor resistance. TPU tip protects the tip from abrasion and impact. Padded Lycra collar protects the instep without constriction. SmellStop lining in 3D technical fabric. combined with antibacterial treatment that eliminates unpleasant odors. breathable. absorbent and desorbent. Removable, scented Dry'n Air anatomical insole. equipped with a system of channels and holes that promote air circulation in the shoe. Standard: EN20345 S3 SRC