The Sun Cover is designed to fasten to the main seat of Oscar M and Olive strollers. It will fit over the Avery Capsule or Second Seat (Olive); however, it will not fasten securely to these accessories. The black panels are certified UPF50+, and the breathable mesh is certified to block 80% of UVA and UVB rays. It also includes a small carry pouch for compact storage. The Sun Cover features a magnetic flap that can be tucked away into the pocket above and a zip for easy access to your child.