Black Microfibre. EN ISO 20345, Rating Standard S1, 200 Joule toecap protection; Closed seat region (fully enclosed heel); Energy absorption of seat region. Heat Resistance to 200 Degrees C, Slip Resistance Rating SRA - Outsole Slip Resistance BS EN ISO 20344:2004/A1:2007 (5.18); Tested on Ceramic Tile/Sodium Lauryl - Heel part 0.28; Flat Contact 0.32; Sizes 2-8.