Thank you for viewing. Ergobaby infant insert for baby carriers:*: Made of breathable mesh material for comfort and to prevent stuffiness◎ Adjustable with a buckle. Used for about 2 months when my baby was a newborn. I think it can still be used♪ No box or instruction manual. There are no noticeable stains, but please understand that there may be oversights as I am a private seller. m(__)m I will compress it for shipping.