Igitambaro cya Spunalce kidafunze gikwiriye gukoreshwa mu gupfuka imyenda yo mu bwoko bwa duvet, ahanini gikozwe mu ruvange rwa polyester fibre (PET) na viscose fibre (viscose fibre); Uburemere bwacyo busanzwe buri hagati ya 40-80gsm. Ingano yoroheje kandi ihumeka ya 40-80gsm ikwiriye gukoreshwa mu gihe gito, mu gihe ingano ya 80-100gsm ari nini kandi iramba, ishobora kwihanganira imiterere myinshi yo gushyiramo no guhinduranya. Ibara, imiterere, n'uburyo bwo kubyimba bishobora guhindurwa;
