Koolaburra by UGG - Advay Slip-On. Color Sand. On sale for $69.01. MSRP $74.99.. 4.2 out of 5 starsAdd to favorites. 0 people have favorited this+4Brand NameKoolaburra by UGGProduct NameAdvay Slip-OnGenderWomen'sColorSandPrice$69.01MSRP: $74.99Rating4Rated 4 stars out of 5(30)