The reference to transparency indicates that these bottles are clear or see-through, allowing users to easily see the content inside. This is practical for identifying the type and level of oil remaining in the bottle.

These glass bottles are designed to preserve the quality of cooking oils by preventing exposure to light and air, which can cause oils to go rancid. The square shape may also provide efficient storage, especially if you have limited space in your kitchen cabinets or pantry.

Overall, this set of glass bottles offers a range of sizes to accommodate different usage patterns, making them suitable for both home and commercial kitchens. The custom 1L olive oil marasca bottles add a touch of sophistication and are likely chosen for their aesthetic appeal.