Cressi Flex

The Cressi Flex BC. It is extremely lightweight (1.8 kg for size M)

210 denier nylon, mesh fabric, rubber material (rear)
Two zip-up pockets with internal weight pockets
Two rear weight pockets
Soft, padded backpack with double camband to hold the tank
D-rings and rings made from light alloy
Three purge and pressure valves
Rear purge valve with command brought to the front
FAST system to fold up the BC and make it compact
Light blue Velcro belt stowed in the bottom zip-up pocket to pack up the BC
Sizes from XS to XL