Arc'teryx Voltair LiPo 22.2V Battery Color:Black/Black Both sides lit (low power)

Both sides lit (low power) 180 hrs

8" (20 cm) center front zip with semi-locking slider

When you want to carry as little as possible

I'd say this chapter alone makes the book worth the price

Designed for all the ways you climb

Arc'teryx Voltair LiPo 22.2V Battery Color:Black/Black Both sides lit (low power)The custom designed, high performance rechargeable 22. 2V lithium ion polymer battery for the Voltair avalanche airbag system is created to deliver multiple deployments on a single charge. If a fresh battery or transport is required, the high grade automotive connector makes removal easy. Approved for airline transport, it is field rechargeable using any portable power system solar, wind turbine, etc. (requires separately sold voltage adapter).