You can wear your newborn twins both in the same Baba Sling, until they grow out of it, by adjusting the baby sling longer, and having one baby in the hammock position and one in the easyrider

Wearing Twins with your Baba Sling
You can carry twins in the same sling.
It is comforting for them to feel that same closeness they shared while in the womb together.

Start with one baby in the “Easy Rider” position.
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Once you have one baby in the Easy Rider Position, take the other onto the free shoulder. Slip your free hand inside the sling and take the babies feet and bottom and guide them into position.
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One twin can be in Easy Rider Position while the other is in the Hammock Position. This is such a lovely position for twins as it is so similar to being back in the womb together. It’s also wonderful to be able to breast feed them at the same time.
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As they grow you can use a separate sling for each baby.