Shop the Crocs Literide 360 Pacer 'Triple Black'. Upgrade your shoes collection today! Closure: lacing. Toe type: round toe. Crocs use US sizing on the sole; UK sizes follow a one-size conversion (e.g., US M5 | W7 corresponds to UK M4 | W5). If you typically wear a half size, we recommend you order a size up. Crocs go by US sizes on the sole, make sure you are on point with the conversion, check our size chart below. Lightweight Durability.