USED Therm-a-Rest Neo Air MicroPump Sleeping Bag One Size. 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. Specifications for Therm-a-Rest Neo Air MicroPump Sleeping Bag: Manufacturer: Therm-a-Rest Color: Black Packed Size: 2.5 x 2.7 x 1.75 in Weight: 2.3 oz Age Group: Adults Height: 2 in Application: Backpacking Fabric/Material: Polycarbonate/Abs Blend Length: 2.3 in Width: 1.8 in Sleeping Pad Type: Pump Sack Features of Therm-a-Rest Neo Air MicroPump Sleeping Bag Powerful: Inflates your pad in as little as three minutes. Multiuse: Used during pad inflation and deflation. Package Contents: Therm-a-Rest Neo Air MicroPump Sleeping Bag Therm-a-Rest 13227: Neo Air MicroPump Sleeping Bag One Size