Compatibility: Capsule lights can be used in podpoi, capsule poi and your flowtoys tubing-based poi, staffs, contact staffs and batons. You can connect 2 capsules using a capsule link for tubing-based props.
Capsule lights cannot be used in crystal cases. Capsules fit in a podshell with a c-ring (optional), and fit in flowcaps without the c-ring.
Options: Upgrading a prop from single to double capsules? Add an additional capsule link to connect your existing capsules. Using in pod shell? Select a c-ring if you do not already have one.