Beto ya PolyLock, nayo yitwa E-lock cyangwa polylock, ikozwe muri HDPE, E-shusho, irakwiriye gushikama muri beto neza. Iraterwa cyangwa igashyirwa muri beto itose mugihe ukoresheje, kubuso bugaragara bwo gusudira, geomembrane irashobora kuyisudira byoroshye. Ubuso bworoshye bufite ubugari bwa 15cm cyangwa 10cm ni ubwo gusudira amabati ya polyethylene mugihe intoki za 3-4cm z'uburebure zikoreshwa mugushyiramo beto y'urubuga kugirango ifungwe kandi ikosore hamwe na geomembrane kugirango ikore banki yuzuye idafite amazi.