As floor protection, it’s okay because no cello or double bass spike will manage to pierce the material the product is made of. However, if you intend to use it as a spike support, it’s not a wise choice since the material it’s made of slides on any surface (marble, tiles, parquet, cement, carpet, rug) and you would have to stop every 10 seconds to reposition your instrument between your legs. However, it can be used as floor protection in a corner of a room where you usually store the instrument.