What is the plastic grid of the click wood tiles made of?

Mansion Weave Geometric Parquet Unfinished Oak Flooring

Snap in Easy Click Locking Recycled Plastic Grid Base for Composite Wood Plastic WPC Deck Tiles - China Plastic Grid Base, Decking Base

Perforated Garage Floor Tiles - DIY Interlocking System - (Mesh/Drain)

How can we lay a wood floor on an uneven surface and make it look level (not tilted)? - Quora

10 Easy Pieces: Non-Slip Floor Tiles - Gardenista

Coin Grid-Loc Tiles - Designer Plastic Garage Floor Tile

How to DIY your Own Penny Tile Patterned Floor - Chris Loves Julia

Outdoor Tiles & Decking - IKEA CA

Prismatic Light Diffuser Clear Frosted Transparent Plastic

Tile Matting - Floor Safety Mat Product (Interlocking

How to Select Tiles for a Living Room – Rubi Blog USA

Tiles Dezeen

simpa Black Pathway Gravel Grass Stabilisation Grid Tile - Set of 16