adidas Alliance Ii Sackpack, Green/Bahia Magenta, One Size Go to amazon.com Related posts Check expert advices for adidas sackpack alliance? FeatureLifetime Warranty - built to lastPerfect size for a quick trip to the gym or practiceAdjustable shoulder strap for ease of Use DescriptionLifetime warranty - built to last. Perfect size for a quick trip to the gym or practice. Adjustable shoulder strap for ease of use.