Koolaburra by UGG - Advay Slip-On. Color Dune. On sale for $54.99. MSRP $74.99.. 4.2 out of 5 starsAdd to favorites. 0 people have favorited this+4Brand NameKoolaburra by UGGProduct NameAdvay Slip-OnGenderWomen'sColorDunePrice$54.99MSRP: $74.99Rating4Rated 4 stars out of 5(29)