This work-ready slip-on delivers comfort and style so you don't have to choose one over the other!. Water-resistant microfiber upper. Slip-on design. Fabric-lined interior. Memory Foam cushioned insole. Arch pillow cushioning for extra support. Flexible nitrile rubber sole meets OSHA standards for slip-resistance. Slip-resistant sole meets or exceeds a 0. 5 coefficient of friction even on wet or oily surfaces when tested using ASTM F1677-96 Mark II standards