【Comfortable Support】 This infant insert is specially designed for babies, providing comfort and support. It's softly padded to firmly support the baby's neck and back. 【Ergonomic Design】 The Ergobaby infant insert is designed to allow babies to sit in a natural position. This provides gentle support for the baby's body. 【How to Use】 Suitable for babies from newborn to 4 months old, and for babies weighing 3.2kg or more. It can be used in conjunction with an Ergobaby carrier. - Brand: ergobaby - Product Name: Infant Insert - Weight Limit: Newborn (3.2kg or more) - Usage Period: Up to 4 months - Material: Soft padding - Features: Ergonomic design - Target Age: Usable from newborn Thank you for viewing. I purchased this used on Mercari, but I haven't used it and have been storing it. I have washed and stored it at home. There are no noticeable stains on the main body, but the box and instruction manual have some folds and stains, so please be aware of this. I will attach the shipping label to the box and send it.