Ibice bya reberi nibice bikozwe muri reberi, polymer karemano izwiho gukomera, kwihangana, no kuramba.Ibice bya reberi bikoreshwa mubikorwa bitandukanye mubikorwa nkimodoka, ubwubatsi, ikirere, nibicuruzwa byabaguzi. Kimwe mubintu byingenzi bigize ibice bya reberi nuburyo bworoshye cyangwa bworoshye.Rubber ifite ubushobozi budasanzwe bwo kurambura hanyuma igasubira muburyo bwayo bwambere, bigatuma biba byiza mubisabwa aho ibice bigomba gukurura ihungabana cyangwa kunyeganyega.