This durable weight vest is made of high-strength neoprene and double-stitched for long-lasting durability and to withstand the wear and tear of high-intensity training. Iron sand filling ensures stable weight distribution and prevents shifting, making it ideal for running, high-intensity interval training (HIIT), walking, or strength training. A quick-adjustable buckle system and elastic straps allow for personalized adjustments to fit different body types. Reflective strips enhance nighttime visibility, and breathable mesh fabric prevents overheating. Thickened shoulder straps and a waist belt made of soft, friction-free fabric reduce joint stress and ensure comfort during extended training sessions. Even weight distribution improves training effectiveness and minimizes the risk of injury. Weight: 20.3 lbs (approximately 9.3 kg).