I am take about sky bags its veryy cool bags they have many feature in this bag when compare the other bags they have different feature in this bag and other bag this bag feature ra they can drop a water they dont damage the inner side party if u pick a laptop inside they have dont damage the inner side party outer side party they have water are summer shin any they have dont damage ther inner side and outside party they have colour more in this bag I love it this bag I am using this bag