- Easy to release: The smooth surface and twistable lid let you release ice balls with a light twist after opening the lid. - Easy to use: Pour a larger amount of liquid into the tray, cover until liquid comes out of the small holes, then freeze for 4 hours to get 33 sphere ice balls. Three trays can make 99 balls at one time. - Stackable and removable lid: Each set includes one tray with a removable lid that has small holes, allowing you to stack multiple trays and save space. - Food-grade safety material: Made of high-quality food-grade material. BPA-free, odorless, non-toxic. Safe and durable. - Use scenario 1: Ideal for home bars and cocktails where round ice slows dilution and keeps drinks cold without watering them down. - Use scenario 2: Great for parties or gatherings. Freeze and store up to 99 sphere ice balls with three trays for quick service. - Use scenario 3: Everyday family use. Pre-make ice balls for water, juice, or tea, then store them easily thanks to the stackable design.