Solar power bank made of eco-friendly silicone rubber and ABS + PC material,Solid and Sturdy Rain-splash & Shockproof, Waterproof, dustproof, Compass, and metal hook for hands-free or hang it on backpack wherever you go.Lithium Polymer Battery Power Bank is ideal choice for hiking, camping trips or other outdoor activities.Recharge anywhere and anytime with Lithium Polymer Power Bank.Water resistant design ensures Lithium Power Bank functions smoothly when it's raining; Shock-proof feature ensures Lithium Battery Power Bank work properly even it crashes or drops. With the free hook included, you may hang Lithium Battery Charge Power Bank on your backpack for long flights, road trips, hiking, camping, or such, handy to carry and charge by solar.