1. Material: neoprene + iron sand 2. Neoprene fabric is soft and comfortable, not restricting the waist. Delicate and gentle, breathable and comfortable. 3. Heavyweight and filled with fine iron sand for a comfortable, non-abrasive feel. 4. Adjustable buckle for adjustable length, suitable for both men and women. 5. Durable and durable, with fully sealed edges to prevent unraveling and sand leakage. 6. Night vision reflective strips ensure safety during nighttime running. 7. Weight: 3kg
