The bags are all empty, please kindly fulfill it by yourself :) You can put iron sand, sand, useless fabrics or other materials into the bags. Please be sure the materials are all dried and please do not overload the bag.(MAX 20KG) Drop Shipping is availbale, any questions please contact Adrian for help! Description: Including: 1 bag, 4 inner bags Gender: unisex Age: 8+ Quality: high class Color: 3 Size: 46*19*19cm (Manual measurement +-1cm) Net Weight: 700g (Individual difference +-20g) Materials: Main material: Oxford cloth Accessories material: polyester inner bags, zinc zipper. Ages under 8 may cause danger, do exercise under adults' care!