The Mutsy baby bag (aka nursery bag) does not hang well on the Mutsy iGO stroller; the bag strap slips down the handle, sitting too low. These hooks (both left and right versions are included) snap on to the stroller handle to keep the baby bag - or any bag - from slipping. The recommended Black Strong & Flexible material matches perfectly with all other Mutsy attachments.
To be clear, this is not an official Mutsy accessory, but rather an after market solution I created to solve my own problem. I am not in any way associated with Mutsy. I do enjoy their stroller :-)