Halcyon V-weight pouch 10-lb (4.4kg)

The Halcyon V-Weight Pouch can hold up to 10 lbs (4.4 kg) in two separate pockets, which are closed with Velcro. 

The V-Weight Pouch is designed to add weight to your twin tank system as it easily fits between the two tanks. This way, you can conveniently relocate some of the weight to your back for a more even trim.