The Sky by Cressi is a hybrid model that combines the advantages of a panoramic mask and a single-lens mask. Like all the high-tech and high-quality masks by Cressi-sub, the Sky features a tempered single-lens crystal. This provides you with an impressively large field of view, as it doesn't obstruct your vision with a middle frame found in dual-lens masks.

Before the first use of the mask, we should apply white toothpaste (not gel) internally on the lenses and the silicone of the mask. Typically, this toothpaste contains particles that assist in cleaning. The pressure we apply should be gentle to avoid leaving marks on the lenses. We let the toothpaste sit for at least 2 hours, and then we thoroughly rinse the lenses and the interior of the mask with lukewarm water. Ideally, before each use of the mask, we use an anti-fog solution.