BoPET (biaxially oriented polyethylene terephthalate) based emergency blankets pose a huge environmental risk. They are a single-use blanket that doesn't decompose or deteriorate naturally.

BoPET is difficult to recycle. Most recycling plants cannot recycle BoPET due to the separation of compounds. This makes it harder for recycling plants to accommodate the BOPET recovery process.

If marine life or wildlife eat or try to digest BoPET it will wrap around the creature's gut, slowly killing them.