Is Koolaburra and Ugg the same?

Is Koolaburra and Ugg the same?

Deckers Brands has added a new member to the family—the “free-spirited, little sister” to the Ugg brand, Koolaburra by Ugg. ... That's all behind Koolaburra now, after joining Deckers and taking the name Koolaburra by Ugg. The label will act as Deckers' entry into mid-tier department stores and regional footwear chains.Aug 23, 2016

What is the difference between original Ugg and Koolaburra?

The only difference to me is there is faux fur on the inside and uggs have the genuine shearling. The little bit of fur that sticks out on the outside of the Koolaburra is apparently genuine sheep. The suede on both Ugg's and Koolaburra feels the same to me. The comfort is the same to me.