Our drawstrings are made from a blend of unique soft fibers along with Ultra High Molecular Weight Polyethylene (UHMWPE), creating the most advanced slash and tear resistant fabric. The fabric was originally designed and found in high performance safety gloves and protective wear for factories handling glass and other sharp objects. We have sent the fabric we used for independent lab testing and received the highest possible Cut, Tear, and Abrasion Resistance ratings based upon International (ISO) standards. While Roam ByBLVD is not 100% cut-proof, it will make it not worth the effort for ordinary street thieves to steal your valuables.