The Aiiten 4-pack utilizes a hybrid design featuring LFGB-certified silicone for the individual wells and a rigid polypropylene frame. This construction provides better lateral stability than all-silicone models, making it easier to carry to the freezer without spilling. The 1-inch cubes are a uniform size that fits easily into most standard water bottles and glassware.
Specifications show that the removable lids are designed for stacking up to four units high, though exceeding this may cause the bottom lids to bow. While these lids help monitor odors and prevent freezer burn during the first few months, they are friction-fit rather than gasketed, so the trays must be kept level. To extend the life of the lid tabs, which can become brittle at sub-zero temperatures, it is helpful to allow the trays a brief "tempering" period before removal.
The materials are verified BPA-free and safe for dishwasher use, though repeated exposure to high heat may eventually degrade the seal of the lids. Tests indicate that while the silicone wells offer high flexibility, the plastic frame resists torsion, so some physical force is still required for extraction. This set is a solid choice for families looking for a large quantity of standard-sized ice with better organizational features than basic open trays.
For a different take on high-volume ice storage, you might consider the Fddbi 117-cell nugget tray system which includes a dedicated storage bin.
Find more tools to help keep your kitchen organized in our ice cube trays section.
