Midwinter Berkeley is a design by Jessie Tait for Midwinter, produced 1969-1974. It is quite a rare design these days. The pattern was produced on the “Fine Shape” Series which Midwinter started in 1962.
The design consists of a band of squares in alternating olive and turquoise, with an alternating centre colour.
The design to me reflects the influence of colour theorist Joseph Albers....who’s work significantly influenced 20th Century Art & Design – including “Op Art” popular in art, design and culture at the time – and especially big in Britain and Germany.