1000D nylon material Built from 1000D nylon for durability and abrasion resistance, while remaining lightweight for extended dives. This material choice supports reliable performance in saltwater environments and daily use. Quick release buckle A quick release buckle enables rapid weight unloading in different underwater positions, improving buoyancy control and safety during ascent, descent, and transitions. Simple to operate with one hand, even when wearing gloves. Accommodates 4 lbs weight Designed to hold up to 4 lbs of weight, providing effective counterbalancing and stable trim. Compatible with standard 4 lb weights to fit common diving setups. 23 practical use scenarios Descent and buoyancy control: During descent or at depth, adjust ballast by adding or removing up to 4 lbs to achieve comfortable trim and neutral buoyancy. The quick release buckle allows fast changes without fiddling with multiple components. Currents and maneuvering around structures: In moderate to strong currents or near reefs and wrecks, shed ballast quickly if needed to regain control or avoid entanglement, then reattach as conditions change. Training and gear organization: Use during buoyancy control drills or pool sessions to practice precise weight adjustments and maintain a tidy setup, keeping weights easily accessible for repeated practice.