High grade cloth bags which are waterproof, insect proof and mildew proof. These bags are spunbonded and made from polyester fabric and are sealed with drawstrings. They can withstand temperatures up to 190 degrees celsius making them ideal to be placed directly into drying ovens on mining sites or in laboratories. These bags also allow water and moisture to freely drain out of the bag without the loss of sample material, ideal for storage of wet soil and stream sediment sampling. Available in a range of sizes.