Ichi chigadzirwa chakagadzirwa nePET/PE. Iyo pasi inogona kumira pachayo, inobatsira kubhegi yakamira kuratidza. Zipper chisimbiso, inogona kushandiswa zvakare. Iyo yepakati zvinhu zvebhegi ndeye polyester aluminized firimu, ine mutengo wakachipa, kutaridzika kwakanaka uye yakanaka barriers kuita.