Carry your whole day on your back while keeping your devices charged this sleek, yet bomber, top-loading pack that's designed to haul 23.5-liter loads on foot or by bike. This minimal design stands up on its own for easy access to gear and is crafted of the same indestructible water-resistant material that's used to transport gear on yaks during high-alpine expeditions. The 17" laptop pocket connects to the lightweight, large capacity Joey T55 power supply through an integrated cable system. The rugged water- and crush-resistant lithium polymer battery provides three-and-a-half full battery charges or several days of partial charges to your cell phone, MP3 player, tablet, or other USB devices. For the ultimate in versatility, the Joey power supply can also be removed and used as an emergency power supply in other packs.

• 23.5-liter pack with integrated Joey T55 battery
• Side- and top-access neoprene laptop sleeve
• 360-degree reflective front logo, bike-light loop and shoulder straps
• Thick, supportive back panel for maximum comfort
• Stands up on its own for easy loading and unloading
• Durable water-repellent body fabric