Globe 100™ Polar White Open Side Booklet - These premium Polar White (92% brightness) Open Side Booklet envelopes are manufactured with 100% post-consumer FSC certified recycled paper, two side seams under construction and a traditional remoistening seal.100% Post-Consumer Recycled (FSC CERTIFIED) Polar White 92% Brightness Acid Free Lignin-Free Archival Smooth Imaging Finish Two Side Seams Under Remoistening SealFlap Down