Kids simply sit, step or hop on these mesmerizing liquid tiles to watch the colours seep and swirl! Designed with a no-slip backing for safe classroom use, the tiles are filled with coloured liquid that creates ever-changing patterns when pressure is applied. It’s the perfect way to provide a satisfying sensory experience while building gross motor skills! You get 4 rugged plastic floor tiles; each measures 19 3/4" x 19 3/4".