: Astral Buoyancy V8 has air vents. I've borrowed one once, liked it
: a lot. When u try them on, sit on the floor in kayaking
: position... depending on the seat back height in your Lightning,
: you might need a shorter, higher back on the PFD so the seat
: back doesnt push it up.

My kayak's back band (immersion Research) began to suffer serious rust on the adjustment mechanism, so not being a slave to I just tossed it out. I found that the lip on the back of my seat kept me from sliding off the back, and never replaced the back band. Works for me. If you don't slide off your seat, you may not need a back band.

I do like my Astral PFD. It just needs one more exterior pocket.