Winco ESV-IB Spectrum™ Sous Vide Insulation Balls are designed for use with the #ESVI-1 sous vide cooker. This pack includes 100 insulation balls, each made from durable polypropylene, ensuring they can withstand temperatures up to 230°F (110°C). The insulation balls effectively reduce heat loss and evaporation in open cooking baths, while also keeping food items submerged for optimal cooking results. Each pack comes with a convenient mesh bag for easy storage and handling. Ideal for enhancing your sous vide cooking experience.