Protect what is important to you. Our Hermetic dry bags offer a quick and easy solution to keep your valuables safe while you enjoy whatever environment you put them in. Simply place your item in the bag, let go of the opening, and watch as the magnetic seal quickly locks and protects against moisture, dust and even the finest sand. This is the “just-let-go principle” – the bags close immediately and automatically. No manual locking, clicking, pushing, or snapping.