100% brand new and high quality Water turns red and blood The first bloody prank bath mat, a thin plastic mat that reacts to the colour of water and turns your wet footprints into blood red stains. Hidden anywhere, these thin colour changing prank bath mats are less than 1mm (0.03") thick Your boyfriend or girlfriend will be shocked at this unique bathroom prank as he or she will see her or his water splash footprint stains in the toilet turn into blood stains Frightening Halloween decoration - nothing could be more shocking than this gruesome gift for your boyfriend or girlfriend. A great scary present for her/him too, providing a fun gift for Halloween that Water stain dries with each use - repeat use to watch the blood red stain disappear and fade to white. Scares time and time again to create even more surprises with the Bloody Bath Mat [Product Name]: Water Change Bathroom Mat ColorWhite, Weight160g Size40cm*70cm Packagingopp bag Material:Plastic Fabric main component:PVC products containing. 1*water discolouration bathroom mat Caution. 1. The monitor used is different, the computer is different, the angle of photography is different, there may be angle colour problems. 2. Pure manual measurement, there may be 0-1cm error.