This item was received when I purchased a Nikon camera at Map Camera. It has been stored unopened and unused in a dark place. It appears to be something that attaches to a camera strap. It has air cells for weight reduction. It seems like it can be used not only with cameras but also with shoulder-type camera bags. Below is a quote from the official website regarding the product description (excerpt): ========== The air cells can be wrapped around the strap of heavy equipment or attached to a camera bag to significantly reduce the burden on the shoulders! Installation is very easy. It uses Velcro, so you just set the strap. Then just fix it, and the installation is complete. By attaching it to a thin strap, you can also reduce the burden on your neck. Also, you don't have to worry about it slipping off your shoulder. And it can also be used for camera bags! The back is covered with many air cushions. Air is trapped in each cell with a special material, providing excellent cushioning and also distributing the weight of the bag. The design is based on Nikon's traditional arrow strap. ========== ■Shipping■ It will be sent via anonymous delivery, using the Rakuraku Mercari "Nekopos" service. It will be shipped in a thin plastic bag + envelope.