Sleepout Loop Blackout, Set of 2
$178 per set of 2
Certified low-emission polyester (GREENGUARD Gold, OEKO-TEX, PFAS-tested). The most functional fully sealed option here, still a synthetic.
Natural fiber first: a tightly woven organic cotton or linen curtain, oversized around the window and layered for real darkness. For the deepest black without plastic-coated fabric, pair the curtains with exterior shutters or a side-channel install.
View the productCertified low-emission polyester (GREENGUARD Gold, OEKO-TEX, PFAS-tested). The most functional fully sealed option here, still a synthetic.
A US source in the The Hearth directory. Check that it ships to Europe; where it does not, the directory lists a European alternative alongside it.