This is a refill that fits into your full-sized OptimaLift A+ Intensive Eye Repair Capsules. 

Step 1: Unscrew the cap, then push the empty pod up from the base of the jar and lift it out.
Step 2: Insert the new refill pod into the jar and press down gently to lock it in place.
Step 3: Remove the refill pod’s lid and replace with the protective inner lid, screw the cap back on, and you’re done.