TYR Alliance Waterproof Sack Pack (Black) Go to amazon.com Related posts Check expert advices for adidas sackpack alliance? Feature17L CapacityWaterproof constructionEasy roll-top closure with bucklesLarge mesh pocket25" H x 13.5" W DescriptionBuilt to last, TYR bags are engineered to carry and protect the essential gear swimmers need to perform. Always Ready.