Multi-purpose hooks that rotate 360°. To install these hooks wrap the fabric band around the tube and close using the velcro. WARNING: carefully read the instructions and keep for future reference. This is a product for adults. It is not a toy. Do not use the hooks on cradles and beds. Do not leave te child unattended. Check the manual of the stroller for indication of maximum load that can be applied to the hooks to avoid the stroller overturning.