The ILQ9 rating is similar to that of ABEC

Here it is

a design enhancement that allows the skater to bypass the need to make a groove after buying the frame and ensuring maximum comfort and stability on the grind right from the first day

Made from Polycarbonate

it will be easy to identify

ENNUI ST Ankle Guard - Padded Ankle Booties Size:9.5 - 12.0 The ILQ9 rating is similarEnnui Padded Ankle Guards are high tech, long lasting neoprene ankle booties designed to provide a better fit and offer increased protection over traditional booties. High density Poron foam inserts protect against impacts without limiting movement or interfering with your stride. Recommended for 'high impact' boarding, biking, and skating. Sold in Pairs Sizing in EU (w U. S. Men's Shoe): SM: 37 40 (4. 5 7. 0) MD: 40 43 (7. 0 9. 5) LG: 43 46 (9. 5 12.