Tiny yet powerful, the NeoAir Micro Pump will inflate your pad quickly saving you precious time at camp. The 2.3 oz (65 g) pump uses two AAA batteries to inflate your WingLock or TwinLock in minutes. If you have a NeoAir pad with a WingLock valve, the handy pump can also deflate your mattress before packing it up and hitting the trail. Powerful: Inflates your pad in as little as three minutes. Multiuse: Used during pad inflation and deflation. Deflate feature for WingLock Valve only. Batteries not included