FRESHERPACK 50 x Mylar Foil Bags Smell Light Proof UK Seller Best Quality 5.1mil
Boil in the Bag / Freezer Proof - Suitable for boil in the bag, due to the special glue used, for up to 30 minutes and down to - 60 degrees celsius. How to seal: Use a hand held heat sealer, clothes iron, hair tongs etc.