The SERENE UC-1625QB adult combo includes a UM-16 Serene mask and a USP-250 snorkel. 

The UM-16 Serene mask gently conforms to the contours of your face. Constructed with crystal silicone, the Serene has been crafted for divers who want a wide field of view combined with a low volume design. 

The USP-250 dry snorkel features TUSA Hyperdry Elite dry top technology (pat p) that stops water from entering into the snorkel, a drain chamber and purge valve for easy clearing, and hypo-allergenic crystal silicone swivel and mouthpiece. 

UM-16 Mask: 

1-window design with wide field of view 

Patented round edge skirt for increased comfort and better seal 

3-D strap for unprecedented fit 

Five-position strap angle adjuster for micro-adjustment 

USP-250 Snorkel: 

Hypo-allergenic Crystal Silicone Swivel and Mouthpiece 

Patented Hyperdry Elite Dry Top Technology 

Large capacity drain chamber and purge valve for easy clearing 

Ortho-consciously designed mouthpiece for ultimate comfort