WhisperMat-CS Acoustic Underlayment for Stone & Tile Floors
SOUNDBUFFER SoundBuffer - 3 ft. x 33.4 ft. x 3/64 in. Underlayment for Luxury Vinyl Tile and Plank Flooring with Sound Reduction SOUNDBUFFER100 - The Home Depot
How to Soundproof Your Floor and Block Foot Noise | NetWell
Uxcell 5mm 100cmx100cm Car Heat Insulation Pad Underlay Foam Self-adhesive Sound Deadening and Auto Dampening Mat Black - AliExpress