Heat sealable and resealable polyester pouches have durability and feature superior barrier properties. Intended for multi-purpose usage and moderate protection from handling and environmental or chemical contact. These pouches are transparent, freezable, boilable, moisture and odour proof, and airtight. Sealed with commercial sealing equipment or by vacuum. Sealing film without laminates, adhesives, or bonding agents to contaminate contents. Designed to meet FDA regulations and to sustain infra-red and cobalt rays. Safe for all concentrations of alkalies, formaldehyde, most acids, oils, greases and organic solvents. Will endure a temperature range of -56°C to +115°C.