EUC toddler sling from Gooseket, used under 5x. SO HANDY!! Gooseket’s toddler sling is the product to use if you have a baby/toddler that is between 6 months to 4 years old and weighs up to 44lbs. It’s best to use our product from 6 months old when they have enough back and neck strength and are able to sit up by themselves. Our toddler sling plays the same role as a mother ‘s arms for babies/toddlers who fall asleep outside or just want/like to be held.