Brooks - Glycerin GTS 21. Color Blue Opal/Black/Nasturtium. $159.95. 3.5 out of 5 starsAdd to favorites. 0 people have favorited this+7Brand NameBrooksProduct NameGlycerin GTS 21GenderMen'sColorBlue Opal/Black/NasturtiumPrice$159.95Rating4Rated 4 stars out of 5(13)