The black hole cello mat is a British manufactured, non-slip mat for stopping your spike from moving whilst playing. It is small enough to fit in any cello case or even your pocket so you can use this wherever you need to, be it a rehearsal or a live performance. The patented non-slip technology ensures that the cello stays in place no matter how vigorous the playing, whilst protecting the floor from scratches. It has been tested and will stay in place even on a marble or parquet floor.