●--GREAT THERMAL INSULATION: SBR fabric with great thermal insulation property ●.--EASY TO INSTALL: Flexible and easy installation. A practical cover for the tube of your bladder. ●--VARIOUS COLOR FOR YOU: Army green, Black, Blue , Dark khaki, Grey, Light khaki. ●--SIZE: 36in in length and fit for most bladder tube within 10mm in diameter. ●--NOTE: Not suitable for camelbak Water bag, Please check the size of your bladder tube before you buy.