Cressi Dry Bag Waterproof Bag with Long Adjustable Shoulder Strap + Waterproof Case for Mobile Phone Black. Cressi Dry Bag is a waterproof bag to protect items and clothing from sand, earth, water and snow. Closing by turning the upper part around itself and attaching the ends to the buckle. With practical shoulder strap, can be transported over the shoulder. Ideal for the transport of diving suit, fins and mask, even when wet. Attention, do not immerse the bag in water. Available in different sizes and colors.