The Integral Designs Silcoat Backpack, as the name implies, is made of silnylon. The backpanel is 200d polyurethane-coated nylon packcloth, and the shoulder straps and waistbelt are polyester webbing. It has a volume of 1526 cubic inches (25 L) and weighs 4.6 ounces (my measurement). The Silcoat Backpack has a very simple design and can serve as a lightweight pack for dayhikes from camp, bear hang, pillow, stuff sack, and dry bag.
By Will Rietveld
Will Rietveld Ph.D, Senior Editor for Gear and Apparel, joined the BPL staff in April 2004. In his former career, Will was a research scientist, project manager, and R&D program administrator. Now retired, he lives in southern Colorado where he takes up a new career of backpacking year-round in the mountains and canyon country of the Southwest. During the summer months Will and his wife Janet are volunteer wilderness rangers in the Weminuche Wilderness. He has been a lightweight backpacker for 52 years and an ultralight backpacker for 13 years.