FloorComfort 4-ft W x 25-ft L x 5 T Premium Foam Moisture Resistant Flooring Underlayment (100-sq ft / (Fan fold) in the Flooring Underlayment department at Lowes.com
FloorComfort 4-ft W x 25-ft L x 2 T Premium Foam Moisture Resistant Flooring Underlayment (100-sq ft / (Panel) in the Flooring Underlayment department at Lowes.com
How to Choose Underlay for Laminate Flooring | Blog | Floorsave
What is flooring underlay?
FLOORLOT BlueStep Underlayment with Moisture Barrier for Laminate and Wood Floors, (200 sq.ft Roll) - Amazon.com
Improvement of thermal conductivity of underlay foam for laminate flooring to reduce heating energy :: BioResources