Strapless-Go Leg Locking System: 
Many light and medium-weight Nedo aluminium tripods and elevating tripods are equipped with the new Strapless-Go leg locking system without a strap. The tripod's 8-foot legs snap together automatically when they are pushed in. It’s quick and convenient. No more troublesome strapping to hold legs in place for transport. 
To release the lock, simply pull out the leg with the printed marking. The legs immediately unlock and then you can set up the medium-duty tripod.
Strapless-Go - quick, easy, maximum comfort