Koolaburra by UGG - Advay Slip-On. Color Black. On sale for $56.24. MSRP $74.99.. 4.2 out of 5 starsAdd to favorites. 0 people have favorited this+3Brand NameKoolaburra by UGGProduct NameAdvay Slip-OnGenderWomen'sColorBlackPrice$56.24MSRP: $74.99Rating4Rated 4 stars out of 5(30)