GP lenses generally give a better visual performance than soft lenses, whereas soft lenses - such as soft and silicone hydrogels - provide better comfort. Hybrid lenses were designed to offer the benefits of both.
Hybrid contact lenses consist of a central gas permeable material section surrounded by a soft material skirt. Initially, lenses used a hydrogel material for the skirt, but these days a silicone hydrogel material is generally preferred.
Hybrid lenses offer patients the sharper vision associated with a gas permeable central zone, together with the comfort of a soft lens, due to the skirt. Earlier versions suffered from the two sections separating, but newer versions claim to have solved that issue.
Different designs have different fitting philosophies, but all normally involve initially assessing the GP portion of the lens, and then deciding upon the shape of the skirt.