The outer layer is a cotton-linen blend, the lining is breathable mesh, and the middle layer consists of a thin foam sponge. The breathable section features a metal mesh with fabric-bound edges, with the mesh itself treated to prevent rust. The adjustable nylon webbing shoulder straps are equipped with plastic ladder-lock buckles and swivel hooks. The opening is secured with a drawstring finished with wooden beads. The entire item is machine-washable, and the inner lining is removable; all seams are stitched with cotton thread.



