Lonna stool, ash & small by Made By Choice. Dimensions: 34 x 34 x 44 cm Materials: ash Also available: medium, large, oak, black, custom color. Lonna furniture series was originally introduced as part of a café and sauna interior at the historical island of Lonna, right outside the coast of Helsinki. Only recently introduced for the public and now popular destination among young urbanites, this rugged and rocky skerry has a long history serving as a military base and naval demagnetisation station for ships to defend against magnetic mines.