Insulation. Coloured scanning electron micrograph of a fibre of a dacron polyester material used in sleeping bags. The core of each fibre has four cav

---

Insulation. Coloured scanning electron micrograph of a fibre of a dacron polyester material used in sleeping bags. The core of each fibre has four cavities running the whole length of the fibre, increasing the thermal insulation properties. Magnification: x1350 at 6x7cm size. x4532 at 10x8ins

---

Size: 2589px × 3307px
Photo credit: © Science Photo Library / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: bag, dacron, fibre, insulating, insulation, insulator, material, materials, polyester, sem, sleeping, thermal