The Rob Allen Snapper Mirrored Mask has a great seal and fits majority of faces. It is made from 100% liquid silicone which is extremely comfortable as it is softer than standard silicone and generally seals to faces better. The mirror lens is an added bonus on this particular mask as the mirror is designed to allow fish to see themselves in the reflection and come closer with interest. If the fish can see your eyes, it can infact sometimes spook them. With the super easy adjustable side buckles that you squeeze to release, this mask is a great choice for not only beginners but advanced divers also. Being low volume means that there is less air inside the mask when being worn. The robust, durable frame makes this mask a great choice when looking to purchase a new dive mask.