Store hundreds of pages in one convenient, secure place. Super-strong redrope wallets are designed for the most active projects. Built to last with extra-thick, 24 pt. front and back covers, rip-proof Tyvek® lined gussets and 24 pt. flap with extra-thick elastic cord for added security. Tyvek® tear-resistant strip on inside back cover protects against tearing along critical stress points. Soil-resistant Letha Tone® covers.