It can be a real pain getting a standard bladder out of a pack to re-fill when the hose is threaded through the hydration port & shoulder straps. With Source Quick Connect you can simply detach the bladder from the hose, even when its partially full, to make re-filling much easier. To convert your standard bladder hose to SQC follow these simple steps: Cut the tube 3cm from the bottom Attach the SQC female connector to the short tube that is still attached to the bladder Attach the SQC male connector to the long tube with the bite valve Click the parts together