1 bag put into a transparent and thickened polybag,then all together into a five layers standard export cartons,Very strong! And here are our standard packing size: 10pcs: 60x42x47cm 15pcs: 63x46x50cm 20pcs: 75x55x50cm 25pcs: 78x56x62cm 30pcs: 90x72x62cm