The following information is recommended by the manufacturer (Hydrapak). Read the full support thread here.
Reverse by placing your hand in the bladder, grab the bottom, and pull it back through the top opening, just like turning a sock inside-out. The molded opening can also be flipped after the bladder body has been reversed. Then, throw it in the dishwasher or rinse with mild soap and water. Make sure to let the bladder dry out completely while reversed.
The Shape-Shift features a removable baffle which locks for a slim profile and increased stabilization. When unlocked it reverses for easy cleaning - place it on the top-shelf of your dishwasher or rinse with mild soap and water. Make sure to let the bladder dry out completely while reversed.
SHAPE-LOC (ALSO KNOWN AS FIXED CONNECTION)
Many of our brand partners use a fixed baffle bladder called the Shape-Loc. It can only be reversed up until the baffle is exposed but is still simple to clean. We recommend either using a bottle brush or Bottle Bright.
Method One - Fill your bladder with warm water and use a bottle brush along with mild soap to scrub it clean. Rinse well and hang it upside down to dry.
Method Two - Fill your bladder with warm water and drop in one or two Bottle Bright tablets, slide the top close and let sit for fifteen to thirty minutes (depending on the amount of residue). Rinse and hang upside down to dry.