The coats detachable collar needs washing.

Light weight, small size, the mobile is very convenient. 6, can quickly take apart and wash.

The utility model has the advantages of simple structure, simple manufacture, convenient installation, disassembly, washing and replacement and high safety.

The utility model is used, the sleeping bag can be used as the quilt, simultaneously a quilt cover is convenient to be detached and washed because of the extension single layer quilt structure.

Recycling second-hand aircraft carrier, overhaul nuclear reactor, unpick and wash missile engine oil, clean aircraft carrier, space shuttle, maintenance, such change.