The Boba Air is made of light and durable nylon, and packs away into a tiny pouch that can be easily slipped into a small purse or bag. It has the same size and design as the Boba 4G, but has been stripped down to the essentials for ease of use and transport. Best for 15-30 pounds. Only $65, makes a great second carrier, travel carrier, or to keep in the car for shopping trips and errands.
Being unpadded, the Boba Air does not offer quite as much support as the Boba 4G or other soft structured carriers with padded shoulder straps and waistband. If you have an already heavy toddler, or need to wear your baby for extended periods, consider a padded, more supportive carrier as your first recommendation. But the Boba Air is good for older babies and lighter toddlers, especially if just worn for shorter periods.