3in1 Vapor Barrier Flooring Underlayment w/Overlap and pre-Attached Tape Strip – Bestlaminate- 2mm – 500sq.ft (Bundle 5 Rolls Each 100 sg.ft.) 3in1 Vapor Barrier Underlayment | 500 sq. ft bundle (5 rolls each 100 sqft) 2mm thick with a pre-attached self-sealing tape strip and vapor block overlap. Suitable for wood and cement subfloors Our flooring underlayment bundles are shipped in eco-friendly, recyclable bags, reinforcing our commitment to sustainability and reducing environmental impact.