Ibyuma byagenzuwe ni impapuro z'icyuma hamwe na diyama yazamuye cyangwa ishusho y'umurongo hejuru, itanga gufata neza no gukwega. Bikunze gukoreshwa mubutaka bwinganda, inzira nyabagendwa, ingazi, nibindi bikorwa aho kurwanya kunyerera ari ngombwa. Aya masahani aje mubyimbye no mubipimo bitandukanye kandi birashobora gukorwa mubyuma bya karubone, ibyuma bitagira umwanda, cyangwa ibindi byuma, bitanga ibintu byinshi kandi biramba muburyo butandukanye bwinganda nubucuruzi.