fabric for 25L-NEW Lululemon Wunderlust Backpack The drawstring opening allows for easy access to stowed items, while buckle closures keep your bag securely shut. Designed for On the Move Product Features Side pockets for quick access to water bottle and small items Zippered exterior pockets Adjustable exterior straps to secure your yoga mat or jacket Trolley-compatible sleeve Interior pockets keep you organized and your sweaty gear separate Capacity：25L