Next Generation Literide foam insoles are supersoft, incredibly lightweight and extraordinarily resilient. Crocs Lock slip resistant outer sole. Fully moulded and easy to clean. Extra thick upper protects the metatarsal area. Literide foam insoles, lightweight and resilient, slip resistant outer sole, easy to clean. Product Sole displays US Size not UK. Upper Material: Croslite, Lining Material: Synthetic, Sole Material: Synthetic, Closure/Fastening: Slip-On, Features: Comfort, Breathable, Lightweight, Vegan, Adjustable Strap, Toe Shape: Round, Shoe Width: Relaxed, Item Weight: 0.58 KG, Heel Height: Flat (Under 2.5cm), Shoe Shaft Height: Low Top, Shoe Style: Occupational/Non-Safety Shoes, Sandal Style: Sandals, Safety Features: Slip Resistant Sole, Safety Standard: Conforms to EN ISO 20347:2012, OB, SRC.