Rags
From Cargo Handbook - the world's largest cargo transport guidelines website
Pressed bales of usually cotton material.
Used clothing shipped in this way occasionally may be subject to spontaneous combustion, as a result of contamination with oil. Bales may also be contaminated with vermin. Often the iron straps or wires loosen while handling the bales. It is justified to make a remark in such a case. To be stowed away from oils, not with foods or allied products, ammonium nitrate fertilizers etc.
See also IMDG Books.