The Wild River Nomad® XP Lighted Backpack includes an integrated 5000mAh rechargeable USB power supply designed to extend the battery life of small portable electronic devices. It also features an integrated rotating 3-level LED light system that can illuminate both the backpack’s interior and outside work area. Additionally, it can hold up to six 3600-series and four 3500-series trays.Built-in rechargeable USB power supply for charging portable devices.LED light system with white or green light options for inside and out.Multiple pockets including dual-function front utility pocketRubberized base pads to limit wear and keep things dry.Large adjustable padded shoulder straps with added sternum strap for better comfort and fit.