Common materials include PET (often available as 100% recycled PET), wood composite/MDF, ABS plastic, other generic plastics, and nano-coated PVC.
Common mounting methods include magnetic backing for sticking to metal surfaces (like refrigerators), pressure-sensitive adhesive (adhesive backing or adhesive squares), and some models that include or support conventional mounting hardware for wall installation.
Most are compatible with standard dry-erase markers and wipe clean easily with a soft cloth, tissue, towel, or a felt eraser. Many product descriptions note the surfaces wipe repeatedly and remain easy to clean after regular use.
Reported thicknesses range from about 0.03 inches up to roughly 0.125 inches, depending on the model and material.
Pack sizes vary: some items are single boards, others come in 2-packs, and some classroom tools are sold in larger multi-packs such as packs of 6.