There are technically no weight restrictions since the design of the baby wrap equally distributes the weight of your baby so there are no pressure points on mom or baby. It has been tested at 45 pounds and showed no signs of stress or overuse. Keep in mind, that it is a stretchy wrap. It is ideal for the first year of life, but you may use it as long as you and your baby are comfortable. We do know of a happy mom who is still carrying her thirty five pound two year and three month old in her Boba Baby Wrap. (The picture is with a big five year old girl.)