Helena Tynell designed the Aitanlukko (The Padlock) series for Riihimäen Lasi in 1968.  Helena Tynell (1918–2016) has designed many classics for the Finnish Riihimäen Lasi glassworks. One of the most well-known series is Aitanlukko (The Padlock) from 1968. It consists of uni-colored vases with with a lock shape and rustic expression. They came in one size and a multitude of colors. The series was in production until 1974.

Dimensions: 21.5 cm x 14 cm x 6.5 cm