Crocs At Work BISTRO PRO LITERIDE Unisex Slip-Resistant Work Clogs White. The next generation Literide foam insoles are supersoft, incredibly lightweight and extraordinarily resilient. Featuring a Crocs Lock slip-resistant outer sole, these clogs are fully moulded and easy to clean. The extra thick upper protects the metatarsal area. Designed for comfort, breathability, and lightweight wear, they are also vegan. The toe shape is round with a relaxed shoe width. With a flat heel height and low top shoe shaft, these are occupational/non-safety shoes and sandals. They offer slip-resistant soles that conform to EN ISO 20347:2012, OB, SRC safety standards. Please note: Product Sole displays US Size not UK.