PROBLEM TO BE SOLVED: To provide a cold insulating implement having a cold insulating composition in which the agglutination of a thickener is inhibited.SOLUTION: A cold insulating implement has a cold insulating composition containing salt, a thickener, and a solvent. The thickener contains cellulose nanofiber.COPYRIGHT: (C)2014,JPO&INPIT【課題】増粘剤の凝集が抑制された保冷用組成物を供えた保冷具の提供。【解決手段】塩、増粘剤及び溶媒を含有する保冷用組成物を供えた保冷具であって、前記増粘剤にセルロースナノファイバーが含まれることを特徴とする保冷具。【選択図】なし