Double-walled, temperature-regulating liquid container, so that the curing of your acrylic gels and acrylic powders is not accelerated in summer and not slowed down in winter. It ensures an optimal temperature. The brush can be fully immersed in the liquid without touching the bottom of the container. In this way, more liquid can be applied to the brush without damaging the brush tip. The cork stopper prevents the liquid from evaporating.