Littattafan mai amfani, Umarni da Jagora don samfuran DoubleTrac.
DoubleTrac NO.21 Littafin Umarnin Matakan Stool
Gano NO.21 Matakan Stool Kids, ƙaƙƙarfan ƙaƙƙarfan mataki mai ɗorewa wanda aka ƙera don taimaka wa yara su kai saman saman lafiya. Bi sauƙi taro da umarnin amfani da Metaheim Inc. ya bayar don ingantacciyar kwanciyar hankali da goyan baya. Tabbatar da tsaftacewa mai kyau da kulawa akai-akai don kiyaye stool a cikin kyakkyawan yanayi.