It's Mei-Tai!!! More about this carrier can be found here.
Mummy paid an annual fees for the Malaysian Babywearer group (go to the fund) and able to borrow (monthly) one type of carrier home for one month trial, how nice! So that to whoever that is interested in trying out different baby carrier, this is a good chance!
Mei- Tai is more sturdy and comfortable compare to one-shoulder sling. Even En En can go in as well but tying the 2 pairs of long strap is abit tricky. Very good for carrying toddler for long hours.