Barefoot and feeling the world around you.

Barefoot is best for baby. Baby learns through her senses, especially on the bottoms of the feet!
The sensory input from the bottoms of the feet sends information directly to the brain about the texture, temperature and the contour of the surface. When barefoot , the baby doesn't need to use her eyes to look at the surface under her feet creating an unnatural posture. but rather can sense where the floor is and make adjustments with appropriate posture. Their bare feet give them the proprioceptive sensory feedback that allows them to learn balance and a stable base of support.
Honestly this is true for all of us .  Wiggle those toes folks... Wiggle Wiggle

Keep those tiny toes open and feeling the earth below them.