While things have changed for ring slings in the regulatory sphere, all my custom-sewn slings have passed the sling standard, and the clearance section, having been sewn before the standard took effect, is exempt.
Current turnaround time: 2-3 business days (due to water sling BOGO 50% off sale)
Baby and carrier safety
General babywearing safety: Precautions necessary for safe babywearing in any carrier
Car seats and safety: Car seats are the ideal protection for your baby in a car. However, they are far more unsafe to use than a good baby carrier outside the car.
Purchasing a safe carrier: What to look for when buying a baby carrier (besides shopping here!)