Scuba diving accessories. One item is identified as a weight pouch, a removable nylon fabric pouch designed to hold a diving weight. The pouch comes with fabric retainers that enable it to be attached to a buoyancy compensator. The second item is a pocket weight stabilizer belt that fits around the waist of a scuba diver. The belt has nylon pockets that can hold hard or soft weights.
[1] Please importantly note that only the relevant portion of the related is displayed above. You may refer to the said customs ruling for the entire ruling explanation.
[1]. https://rulings.cbp.gov/ruling/G86744