Backstrap loom weaving. Close-up of a woman using a backstrap loom at a weavers' cooperative market, where weavers sell their work to tourists. A backstrap loom is a simple loom designed to have one end worn by the weaver with the other end attached to a fixed object. It is an ancient design used by many indigenous populations around the world. Photographed in 2016, in Santo Tomas Jalieza, Oaxaca, Mexico.