Abstract: A container for storage of items during watersports is described, having a base (10) affixed to the watersports equipment such as a surfboard or diver's gas tank and a body forming a waterproof enclosure detachably secured to the base. The top cover (14) of the body has tabs (44) which are retained under projections (22) of the base such that the bottom tray (12) and top cover of the body cannot be unsealed without disengaging the body from the base. The top surface (40) of the cover forms a ramp engageable by the foot of the surf rider and may have grip material attached thereto.