Hook and Loop Aluminum Foil Fiberglass Sleeve High Temp Resistant Flame Retardant Product Introduction This hook‑and‑loop sleeving is manufactured from high‑performance aluminum‑foil PVC composite substrate, with heavy‑duty sewn‑on hook‑and‑loop fastener along the longitudinal opening. Thanks to the aluminum‑foil composite layer, the sleeve provides outstanding EMI shielding effectiveness against electromagnetic interference. It also possesses superior wear resistance,